[医] 上段(中胚层)

Epimere \Ep"i*mere\, n. [Epi- + -mere.] (Biol.)
One of the segments of the transverse axis, or the so called
homonymous parts; as, for example, one of the several
segments of the extremities in vertebrates, or one of the
similar segments in plants, such as the segments of a
segmented leaf. --Syd. Soc. Lex.
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