pseudostome

名词 n.
中文释义

英文释义

名词 n.
  1. The oral opening on the pseudembryo of an echinoderm.
    — In all the cases which I have observed, the ciliated bands so characteristic of the pseudembryonic form have made their appearance before the rupture of the vitelline sac; and frequently the pseudembryo has become somewhat reniform, a depressed ciliated patch indicating the position of the pseudostome.
  2. A false osculum or secondary opening which replaces the original osculum of a sponge.
  3. A false opening that resembles a stoma but without any true aperture. broadly
    — The opening is via a pseudostome situated on the chamber or at the top of a neck which flares out to form a collar.
  4. A North American rodent, Geomys bursarius.

词形变化

pseudostomes plural

词源

From pseudo- + -stome.
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