epithecal

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Of or pertaining to the epitheca. not-comparable
    — The epithecal covering of the outer is annulated by low ridges and shallow grooves...Fine, close-set, concentric lines, probably representing lines of growth, are obscurely shown on a few of the better preserved portions of the epithecal surface.

词源

From epitheca + -al.
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