Standard Lemma guide

hypostome

noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

Examples

  • 2012, Georgia E. Lesh-Laurie, Chapter 5. Expression and Maintenance of Organismic Polarity, Allison L. Burnett (editor), Biology of Hydra, Harcourt Brace Jovanovich (Academic Press), pages 160-161, As a result or these interactions, the presence of a hypostome inhibits the formation of another hypostome nearby. Removal of the hypostome causes the level of inhibition to fall; regeneration of it restores this level (Webster, 1966).

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any of certain mouth appendages of some insects, arachnids, crustaceans, and hydrozoa; in particular:

The ventral mouthpart plate in trilobites;

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 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);

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Any of certain mouth appendages of some insects, arachnids, crustaceans, and hydrozoa; in particular:

The oral tip surrounded by tentacles in hydrozoan cnidarians.

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From hypo- + -stome.

Across languages

Translations

1 source translations are retained for this English entry.

  • Irish: hipeastóm — appendage