semiannular

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Having a shape resembling part of a ring or incomplete circular band. not-comparable
    — The capsule in both families is spherical, with a bistratose wall; the outer cell layer usually bears nodular thickenings[…]; the inner layer (of nearly equally large cells) lacks the regular semiannular or annular thickenings of most other leafy liverworts[…]

词源

From semi- + annular.
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