operculum

名词 n.
中文释义
英 /əʊˈpɜː.kjʊ.ləm/    美 /oʊˈpɝ.kjə.ləm/

英文释义

名词 n.
  1. A covering flap in animals, such as a gill cover.
    — Hyoliths […] have a small, conical calcium carbonate shell, with a lid called an operculum.
  2. The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.
  3. A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth.
  4. A structure which serves as a cover or lid.
    — I lifted the circular operculum from its place and laid it carefully on the bale.
  5. One of several flaps of cerebral cortex covering the insula.

词形变化

opercula plural

词汇关系

衍生词
operculiferous operculitis preoperculum interoperculum suboperculum
相关词
opercle

词源

Etymology tree
Proto-Indo-European *h₁ep-der.
Proto-Indo-European *h₁épsder.
Proto-Indo-European *h₁epi
Proto-Indo-European *h₂wer-
Proto-Indo-European *-yeti
Latin operiō
Latin -culum
Latin operculumbor.
English operculum
Borrowed from Latin operculum.
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