单词 | microspore |
释义 | microspore[ mahy-kruh-spawr, ‐spohr ] / ˈmaɪ krəˌspɔr, ‐ˌspoʊr / noun Botany.the smaller of the two kinds of spores characteristically produced by seed plants and some fern allies, developing into a male gametophyte.Compare megaspore, a pollen grain. Origin of microsporeFirst recorded in 1855–60; micro- + -spore OTHER WORDS FROM microsporemi·cro·spor·ic [mahy-kruh-spawr-ik, ‐spor‐], /ˌmaɪ krəˈspɔr ɪk, ‐ˈspɒr‐/, mi·cro·spor·ous [mahy-kruh-spawr-uhs, ‐spohr‐, mahy-kros-per-uhs], /maɪ krəˈspɔr əs, ‐ˈspoʊr‐, maɪˈkrɒs pər əs/, adjectiveWords nearby microsporemicrospectroscope, microspherocytosis, microsphygmy, microsplenia, microsporangium, microspore, microsporocyte, microsporogenesis, microsporophyll, Microsporum, microstat Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for microspore
British Dictionary definitions for microsporemicrospore / (ˈmaɪkrəʊˌspɔː) / nounthe smaller of two types of spore produced by some spore-bearing plants, which develops into the male gametophyteCompare megaspore (def. 1) the pollen grain of seed plants Derived forms of microsporemicrosporic or microsporous, adjectiveCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for microsporemicrospore [ mīk′rə-spôr′ ] One of the two types of haploid spores produced by a heterosporous plant. Microspores develop into male gametophytes and are usually smaller than megaspores. In angiosperms, the microspore develops into the pollen grain. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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