单词 | isolecithal |
释义 | isolecithal in British English (ˌaɪsəʊˈlɛsɪθəl) adjective (of the ova of mammals and certain other vertebrates) having an evenly distributed yolk Compare heterolecithalisolecithal in American English (ˌaisəˈlesəθəl) adjective Embryology homolecithal Word origin [1925–30; iso- + lecithal]This word is first recorded in the period 1925–30. Other words that entered Englishat around the same time include: Nazi, dropout, gimmick, off-line, runoutiso- is a combining form meaning “equal,” used in the formation of compound words (isochromatic). In chemistry, iso- is used in the names of substances which are isomeric with the substance denotedby the base word (isocyanic acid). Other words that use the affix iso- include: isoelectronic, isoprene, isoseismic, isotope, isotype |
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