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Webster 1913 Edition

Univalve

U′ni-valve

,
Noun.
[
Uni-
+
valve
: cf. F.
univalve
.]
(Zool.)
A shell consisting of one valve only; a mollusk whose shell is composed of a single piece, as the snails and conchs.
☞ Most univalves are spiral and are the shells of gastropods, but many belong to cephalopods and pteropods. A large number of univalves belonging to the gastropods are conical, cup-shaped, or shieldlike, as the limpets.

Webster 1828 Edition

Univalve

U'NIVALVE

,
Adj.
[L. unus, one, and valve.] Having one valve only, as a shell or pericarp.

U'NIVALVE

,
Noun.
A shell having one valve only. The univalves form one of the three divisions into which shells are usually divided.

Definition 2024

univalve

univalve

English

Adjective

univalve ‎(not comparable)

  1. having one valve, typically used to refer to mollusks, notably slugs and snails.
  2. consisting of a single valve or piece, used to refer to a shell.

Translations

Noun

univalve ‎(plural univalves)

  1. A univalve mollusk or its shell.

Translations

Usage notes

The term univalve is now considered outdated in scientific classification, and the term gastropod is preferred.

Synonyms

Coordinate terms

Related terms

References

  • “univalve” in The American Heritage Dictionary of the English Language, Fourth Edition, Houghton Mifflin Company, 2000.
  • “univalve” in Dictionary.com Unabridged, v1.0.1, Lexico Publishing Group, 2006.
  • "univalve" in WordNet 2.0, Princeton University, 2003.

Etymology

Originated 1655–65 from uni- ‎(“one”) +‎ valve.

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