| 单词 | blastodisk |
| 释义 | blastodisk in American English (ˈblæstoʊˌdɪsk; ˈblæstəˌdɪsk) or ˈblastoˌdisc (ˈblæstoʊˌdɪsk; ˈblæstəˌdɪsk) noun germinal disk blastodisk in American English (ˈblæstəˌdɪsk) noun Embryology the blastula that forms as a flattened sphere on top of the yolk in the yolk-laden eggs of birds and reptiles Also: blastodisc Word origin [1885–90; blasto- + disk]This word is first recorded in the period 1885–90. Other words that entered Englishat around the same time include: lineup, retread, sensitization, toner, zoomblasto- is a combining form meaning “bud, sprout,” “embryo,” “formative cells or cell layer,”used in the formation of compound words. Other words that use the affix blasto- include: blastoderm, blastomere, blastopore, blastosphere, blastospore |
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