Since these are electromagnetic waves, they exhibit properties such as reflection, refraction, diffraction, absorption, polarization and scattering. … c : … Definition of propagation. Propagation refers to the process of starting new flowers and plants using a plethora of sources, including but not limited to bulbs, seeds, cuttings, or some specific parts of the plant. Send us feedback. Many people have held the opinion that asexual propagation is unnatural and that plants thus derived lack the hardiness or the sturdiness of plants grown from seed. RF propagation is a particularly important topic for an… Propagate comes from the Latin word propagare, which means "to … To propagate is to be fruitful and multiply, by the usual routes of reproduction, or by spreading something around — like a rumor. For these and other reasons, horticulturists resort to asexual propagation—i.e., the division or separation and indefinite subdivision of the original plant having the desired traits. Stem cuttings are rooted in water or a moist potting medium such as sand, peat moss, or vermiculite. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'propagation.' Please select which sections you would like to print: Corrections? As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and scattering. a : increase (as of a kind of organism) in numbers. Plant propagation is the process of multiplying plants. If your dog is about to have puppies, then she's engaged in the propagation of dogs, the creation of new life to further the species. Radio signals can travel over vast distances. Learn a new word every day. to reproduce (itself, its kind, etc. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. 15th century, in the meaning defined above. Plant propagation is the process which grows new plants from a variety of sources: seeds, cuttings, and other plant parts. With crops that produce seed freely and come true closely enough for the purposes in view, growing from seed usually is the cheapest and most satisfactory method of plant propagation. propagation - the spreading of something (a belief or practice) into new regions It is measured in microseconds (µs), nanoseconds (ns), or picoseconds (ps), where 1 µs = 10-6 s, 1 ns = 10-9 s, and 1 ps = 10-12 s. The propagation delay for an integrated circuit (IC) logic gate may differ for each of the inputs. Cut a 4- to 5-inch-long (10 to 12 cm) stem (or side shoot) just below a leaf, and remove all but two or … 2. to reproduce (itself, its kind, etc. It is expressed in time per unit length. Radio propagation is the way radio signals are transmitted from one point to another inside the earth’s atmosphere or free space. Delivered to your inbox! Learn more. Methods of asexual propagation include bulb division, layering, cutting, and grafting. Please tell us where you read or heard it (including the quote, if possible). Another word for propagation. ), as an organism does. Plants can be propagated in numerous ways. organs, … Other kinds, however, are so exacting in their requirements that these are best met in a propagating house where humidity and temperature can be more rigidly controlled. propagation definition: 1. the act of producing a new plant from a parent plant: 2. the producing of young plants or…. In layering, the stem of a large plant is notched and wrapped in moist sphagnum moss or bent to the ground and covered with moist soil; when roots appear, growing out of the moss, the stem is cut below the roots and potted. For the ordinary gardener, propagation is a relatively simple but interesting process normally used for economic provision of more versions of favourite plants, as part…. Spring manages to start and pause a transaction according to our propagation setting.. Spring calls TransactionManager::getTransaction to get or create a transaction according to the propagation. https://www.britannica.com/science/propagation-of-plants, Aquatic Community - Propagating Aquarium Plants, University of Missouri Extension - Propagation, Dr. Jungles' Coral Reef Animals of The World - Propagation, The University of Arizona - Plant Propagation, How Stuff Works - Home and Garden - Propagating Plants. 'All Intensive Purposes' or 'All Intents and Purposes'? Many types of seeds may be sown in open ground and, barring extreme wetness or extreme aridity, germinate well enough for practical purposes. Many diseases of plants are caused by fungi and bacteria carried in or on the seed itself, and treatment of the seed with disinfectants is beneficial. Propagation This page contains a dynamic collection of propagation information gathered from many different sources. WHOIS is a publicly available tool that searches the databases of domain registries and registrars to detail the domain owner contact information. Find more ways to say propagation, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. The radio propagation is going to do an interesting exercise. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Because of their high oxygen requirement, the medium in which the seeds are sown generally should contain more sand (or other filler or mulch material) than ordinary garden soil does. 1) Propagation delay, symbolized t pd, is the time required for a digital signal to travel from the input(s) of a logic gate to the output. When the isotropic radiator is used for transmission of EM waves we get spherical wavefronts as shown in the figure because it radiates EM waves uniformly and equally in all directions. These might include different types of cuttings in addition to several methods of layerin… Some of these include seeds, cuttings, layering, and division. Seed propagation is how many plants naturally reproduce. Of these types of plant propagation, there exists various forms. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by … (2) Propagation, whereby the intermediate reacts with the original reactants, producing stable products and another intermediate, whether of the same or different kind; the new intermediate reacts as before, so a repetitive cycle begins. b : the spreading of something (such as a belief) abroad or into new regions. 2 : to pass along to offspring. from person to person; disseminate. Omissions? It supports some of the propagations for all types of TransactionManager, but there are a few of them … Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Our editors will review what you’ve submitted and determine whether to revise the article. Accessed 12 Dec. 2020. New plants are produced either from seed or by the techniques of division, taking cuttings, grafting, budding, or layering. ‘the propagation of plants by root cuttings’. It then bounces up again to the ionosphere, and continues bouncing back again until it reaches the radio receiver. The only justification for the generalization that asexually propagated plants lack hardiness or sturdiness is the fact that virus diseases can be transmitted by asexual propagation and that most such diseases cannot be transmitted through seed. Some species of plants, in their cultivated forms, do not produce seed—e.g., banana, pineapple, and sugarcane. In computer technology, the velocity of propagation of an electrical or electromagnetic signal is the speed of transmission through a physical medium such as a coaxial cable or optical fiber. 4. to spread (a report, doctrine, practice, etc.) transitive verb. 1 The breeding of specimens of a plant or animal by natural processes from the parent stock. Here the center of the sphere is the radiator while the radius of the sphere is R. Clearly, all the points at the distance R, lying on the surface of the sphere have equal power densities.The E waves travel in the free space with the velocity of light .i.e. Vegetative propagation is an asexual method of plant reproduction that occurs in its leaves, roots and stem. Additionally, farmers and gardeners can take advantage of seed propagation by obtaining seeds from plants they wish to propagate or grow. Propagation, in horticulture, the reproduction of plants by any number of natural or artificial means. Many types : the act or action of propagating: such as. … ing. Navigate parenthood with the help of the Raising Curious Learners podcast. When cutting or layering are not feasible, a bud or twig of one plant is grafted onto the fully developed root system of another. 3. to transmit (hereditary features or elements) to or through offspring. Many gardeners will often save and grow ornamental plants and crops from seeds, especially if the plant has many desirable characteristics. More example sentences. It is the time for all ISPs (internet service providers) from all across the globe to update their DNS cache records to know / detect that the IP has changed for your domain. First it bounces off a top layer of the atmosphere called the ionosphere, then it bounces back to the Earth (this is reflection. Plant propagation is an important step in producing additional plants in the garden or home. Bulbs and other underground rootlike structures, such as tubers and corms, may be divided as they mature. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Get exclusive access to content from our 1768 First Edition with your subscription. The method of propagation normally depends on the plant type. Definition of propagate. Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere. Can you spell these 10 commonly misspelled words? The sections are then placed in a moist medium to root. Let us know if you have suggestions to improve this article (requires login). Test Your Knowledge - and learn some interesting things along the way. Updates? In a great number of cultivated species, seedlings vary so much that the desired traits are found in only a small proportion. Plant propagation is the branch of horticulture which deals with the deliberate (or intentional) production of new plants using various starter materials (e.g. Which of the following words shares a root with. 1. to cause (an organism) to multiply by any process of natural reproduction from the parent stock. Some radio signals can travel or propagate around the globe, whereas other radio signals may only propagate over much shorter distances. Velocity of propagation is a measure of how fast a signal travels over time, or the speed of the transmitted signal as compared to the speed of light. Because many soils harbour fungi destructive to sprouting seed and young seedlings, soil that is used for germinating seed commonly is sterilized by heat or chemicals. 'Nip it in the butt' or 'Nip it in the bud'? The propagation delay on a PCB trace is the one-way (source to load) time required by a signal to travel on that trace. Greater porosity makes these media more subject to rapid drying, however, and moisture must be carefully monitored. How to use a word that (literally) drives some pe... Test your knowledge of the words of the year. Although vegetative propagation is an alternative way for the production of desired clones, propagation through traditional root cutting is not effective due to long procedure and slow growth (Tyagi and Prakash, 2004; Singh et al., 2008). Auxins (growth hormones) are often added to the wounds or soil to stimulate rooting. Lets look at what are some forms of plant propagation. Plant propagation can also refer to the man-made or natural dispersal of seeds. This is what we usually call 'DNS Propagation' or 'DNS Propagation Time'. (3) Termination, which may be natural, as when all the reactants have… This data is extremely useful for ham radio operators and shortwave listeners to help determine whether or not long distance radio communications are possible. “Propagation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/propagation. Propagation defines our business logic ‘s transaction boundary. 1 : to cause to continue or increase by sexual or asexual reproduction. This can occur through fragmentation and regeneration of specific vegetative parts of plants. Sexual propagation involves the union of the pollen (male) with the egg (female) to produce a seed. You may be wondering, what is plant propagation? The seed is made up of three parts: the outer seed coat, which protects the seed; the endosperm, which is a food reserve; and the embryo, which is the young plant itself. Thesaurus: All synonyms and antonyms for propagation, Nglish: Translation of propagation for Spanish Speakers, Britannica.com: Encyclopedia article about propagation. 3 a : to cause to spread out and affect a greater number or … Asexual propagation, however, is not unnatural; some of its forms—e.g., layering and grafting—are rather common in nature. What is propagation delay on a PCB? ), as an organism does. Radio propagation, or the way in which radio signals travel can be an interesting topic to study. The propagation delay is the function of the dielectric constant (Er) and the trace geometry/structure. What made you want to look up propagation? The act or process of propagating, especially the process by which an impulse is transmitted along a nerve fiber. After content moderation, lawmakers asked most about misinformation, with 39 questions about the, On September 8, 2020, the same day Stankey's essay in Politico was published, AT&T told the FCC that the agency should not require additional details to verify the accuracy of, My new friend in Mississippi, Carol, is a whiz at, Teenagers are not able to spot a sensationalistic theory involving Princess Diana’s death as a, The populations are so small that inbreeding depression has made seed, Its own survival depends on sparing its victims to continue as vehicles for its, Post the Definition of propagation to Facebook, Share the Definition of propagation on Twitter, We Got You This Article on 'Gift' vs. 'Present'. When a seed is mature and put in a favorable environment, it will germinate (begin active growth). to cause (an organism) to multiply by any process of natural reproduction from the parent stock. However radio signals are affected by the medium in which they travel and this can affect the radio propagation or RF propagation and the distances over which the signals can propagate. Let us explore the different types of vegetative propagation and its examples in detail. With crops that produce seed freely and come true closely enough for the purposes in view, growing from seed usually is the cheapest and most satisfactory method of plant propagation. Such propagation will occur after any: Changes to your domain’s WHOIS information. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! ‘DNS propagation’ is a term used to describe the time frame after making any changes to your domain name. Propagation, in horticulture, the reproduction of plants by any number of natural or artificial means. 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