Hypostome

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any of certain mouth appendages of some insects, arachnids, crustaceans, and hydrozoa; in particular

    "This mode of attachment and support of the hypostome in proparian trilobites is also shown by Öpik's work (1938, and references) and by Whittington (1941b, p. 514-517) and Evitt and Whittington (1953)."

  2. 2
    Any of certain mouth appendages of some insects, arachnids, crustaceans, and hydrozoa; in particular:; The ventral mouthpart plate in trilobites;
  3. 3
    Any of certain mouth appendages of some insects, arachnids, crustaceans, and hydrozoa; in particular:; The barbed attachment structure associated with the mouthparts of parasitic arachnids (e.g. ticks);
  4. 4
    Any of certain mouth appendages of some insects, arachnids, crustaceans, and hydrozoa; in particular:; The oral tip surrounded by tentacles in hydrozoan cnidarians.

Synonyms

All synonyms
hypostomahypostoma

Example

More examples

"This mode of attachment and support of the hypostome in proparian trilobites is also shown by Öpik's work (1938, and references) and by Whittington (1941b, p. 514-517) and Evitt and Whittington (1953)."

Etymology

From hypo- + -stome.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.