Syn.
— Union; oneness; junction; concord; harmony. See Union.

UNIVALENCE
U*niv"a*lence, n. (Chem.)

Defn: The quality or state of being univalent.

UNIVALENT
U*niv"a*lent, a. Etym: [Uni- + L. valens, -entis, p. pr. See
Valence.] (Chem.)

Defn: Having a valence of one; capable of combining with, or of being substituted for, one atom of hydrogen; monovalent; — said of certain atoms and radicals.

UNIVALVE
U"ni*valve, n. Etym: [Uni- + valve: cf. F. univalve.] (Zoöl.)

Defn: 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.

UNIVALVE; UNIVALVED
U"ni*valve, U"ni*valved, a. Etym: [Cf. F. univalve.] (Bot. & Zoöl.)

Defn: Having one valve; as, a univalve shell or pericarp.