QUADRIVALENT

Adjective

quadrivalent (not comparable)

(chemistry) Having a valence of four

(of a vaccine) Protecting against four different (usually flu) viruses.

(graph theory) Said of a graph: that all of its vertices have degree four.

Synonyms

• tetravalent

Noun

quadrivalent (plural quadrivalents)

(genetics) Any quadrivalent chromosome

Source: Wiktionary

Quad*riv"a*lent, a. Etym: [Quadri- + L. valens, -entis, p. pr. See Valence.] (Chem.)

Definition: Having a valence of four; capable of combining with, being replaced by, or compared with, four monad atoms; tetravalent; -- said of certain atoms and radicals; thus, carbon and silicon are quadrivalent elements.

Source: Webster’s Unabridged Dictionary 1913 Edition