| 单词 | archiblast |
| 释义 | archiblast in American English (ˈɑrkəˌblæst) noun Biology 1. egg protoplasm 2. the outer of the two layers of an embryo in an early stage of development Word origin archi- + -blastarchiblast in American English (ˈɑːrkəˌblæst) noun Biology the formative part of the egg, as distinguished from the part that nourishes the embryo Word origin [1875–80; archi- + -blast]This word is first recorded in the period 1875–80. Other words that entered Englishat around the same time include: cross-fertilization, knockabout, massage, musical chairs, neoclassicarchi- is a combining form with the general sense “first, principal,” that is prefixed tonouns denoting things that are earliest, most basic, or bottommost (archiblast; archiphoneme; architrave); or denoting individuals who direct or have authority over others of their class,usually named by the base noun (archimandrite; architect); -blast is a suffix meaning “bud, sprout,” “embryo,” “formative cells or cell layer”. Otherwords that use the affix -blast include: epiblast, megaloblast, odontoblast, spongioblast, statoblast |
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