单词 | homolecithal |
释义 | > as lemmashomolecithal homolecithal adj. Brit. /ˌhəʊmə(ʊ)ˈlɛsᵻθl/ , /ˌhɒmə(ʊ)ˈlɛsᵻθl/ , U.S. /ˌhoʊməˈlɛsəθ(ə)l/ , /ˌhɑməˈlɛsəθ(ə)l/ [Greek λέκῐθος yolk of an egg] Embryology (of an egg cell) having the yolk uniformly distributed throughout the cytoplasm.ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > yolk yolked1584 vitelliferous1819 vitelline1835 yolk1836 vitellary1847 vitelligenous1859 vitelligine1864 vitellogenous1878 alecithal1880 centrolecithal1880 heterolecithal1892 homolecithal1892 vitelligerous1898 isolecithal1926 ovovitelline1945 vitellogenetic1961 vitellogenic1964 1892 E. L. Mark tr. O. Hertwig Text-bk. Embryol. i. 28 The translator has been accustomed for several years to use the word homolecithal instead of alecithal, heterolecithal being employed as a coördinate term to embrace telolecithal and centrolecithal eggs. 1914 W. E. Kellicott Textbk. Gen. Embryol. iii. 93 It is often difficult to distinguish the telolecithal egg from the homolecithal type. 1958 B. M. Patten Found. Embryol. iv. 78 In the egg of Amphioxus the yolk is relatively meager in amount and fairly uniformly distributed throughout the cell. An ovum with such a yolk distribution is termed isolecithal (homolecithal). < as lemmas |
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