| 单词 | fertilization |
| 释义 | fertilization[ fur-tl-uh-zey-shuhn ] / ˌfɜr tl əˈzeɪ ʃən / SEE SYNONYMS FOR fertilization ON THESAURUS.COM nounan act, process, or instance of fertilizing. the state of being fertilized. Biology.
the enrichment of soil, as for the production of crops. Origin of fertilizationFirst recorded in 1855–60; fertilize + -ation OTHER WORDS FROM fertilizationfer·ti·li·za·tion·al, adjectiveo·ver·fer·ti·li·za·tion, nounpre·fer·ti·li·za·tion, nounre·fer·ti·li·za·tion, nounWords nearby fertilizationfertility, fertility cult, fertility drug, fertility factor, fertility symbol, fertilization, fertilize, fertilizer, fertilizin, ferula, ferule Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for fertilizationBritish Dictionary definitions for fertilizationfertilization fertilisation/ (ˌfɜːtɪlaɪˈzeɪʃən) / nounthe union of male and female gametes, during sexual reproduction, to form a zygote the act or process of fertilizing the state of being fertilized Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for fertilizationfertilization The joining of sex cells to form a new living thing. In humans, a male sperm joins a female ovum, or egg; the resulting zygote divides into a multicelled structure that implants in the womb and grows into an embryo. In plants, pollen grains, containing the male sex cells, enter the female sex cells in the pistil; from this union, fruit eventually grows. When fertilization occurs within a single flower, we call it self-fertilization. (See cross-fertilization.) The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for fertilizationfertilization [ fûr′tl-ĭ-zā′shən ] n.The union of male and female gametes to form a zygote, a process that begins with the penetration of the secondary oocyte by the spermatozoon and is completed with the fusion of the male and female pronuclei. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for fertilizationfertilization [ fûr′tl-ĭ-zā′shən ] The process by which two gametes (reproductive cells having a single, haploid set of chromosomes) fuse to become a zygote, which develops into a new organism. The resultant zygote is diploid (it has two sets of chromosomes). In cross-fertilization, the two gametes come from two different individual organisms. In self-fertilization, the gametes come from the same individual. Fertilization includes the union of the cytoplasm of the gametes (called plasmogamy) followed by the union of the nuclei of the two gametes (called karyogamy). Among many animals, such as mammals, fertilization occurs inside the body of the female. Among fish, eggs are fertilized in the water. Among plants, fertilization of eggs occurs within the reproductive structures of the parent plant, such as the ovules of gymnosperms and angiosperms. See Note at pollination. The process of making soil more productive of plant growth, as by the addition of organic material or fertilizer. Other words from fertilizationfertilize verbThe American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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