单词 | hypostome |
释义 | hypostomen. A part of the mouth in arthropods and some other invertebrate animals; e.g. the clypeus of dipterous insects, the labium or under lip of trilobites, the proboscis of Hydrozoa. ΘΚΠ the world > animals > invertebrates > bodies or parts > [noun] > equivalent of the mouth > part of (unspecified) hypostome1863 1863 J. D. Dana Man. Geol. 188 (note) Hypostome, a prominent piece on the under surface of the head, covering the mouth. 1872 H. A. Nicholson Man. Palæontol. 147 The aperture of the mouth..bounded in front by a plate, known as the ‘labrum’ or ‘hypostoma’. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 246 The hypostome or oral cone [in hydranths] is conical. This entry has not yet been fully updated (first published 1899; most recently modified version published online December 2020). < |
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