Hypertext Webster Gateway: "univalve"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Univalve \U"ni*valve\, n. [Uni- + valve: cf. F. univalve.]
(Zo["o]l.)
A shell consisting of one valve only; a mollusk whose shell
is composed of a single piece, as the snails and conchs.
Note: 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.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Univalve \U"ni*valve\, Univalved \U"ni*valved\, a. [Cf. F.
univalve.] (Bot. & Zo["o]l.)
Having one valve; as, a univalve shell or pericarp.
From WordNet (r) 1.7 (wn)
univalve
adj : (zoology) used of mollusks, especially gastropods, as snails
etc. [ant: {bivalve}]
n : a class of mollusks typically having a one-piece coiled
shell and flattened muscular foot with a head bearing
stalked eyes [syn: {gastropod}]
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