quinquevalent [kwing-kwuh-vey-luh nt, kwin-, kwin-kwev-uh-luh nt, kwing-] Word Origin adjective Chemistry.
- pentavalent.
- exhibiting five valences, as phosphorus with valences 5, 4, 3, 1, and −3.
Origin of quinquevalent First recorded in 1875–80; quinque- + -valent Related formsquin·que·va·lence [kwing-kwuh-vey-luh ns, kwin-, kwin-kwev-uh-luh ns, kwing-] /ˌkwɪŋ kwəˈveɪ ləns, ˌkwɪn-, kwɪnˈkwɛv ə ləns, kwɪŋ-/, quin·que·va·len·cy, noun British Dictionary definitions for quinquevalent quinquevalent adjective
- chem another word for pentavalent
Derived Formsquinquevalency or quinquevalence (ˌkwɪŋkwɪˈveɪləns, kwɪnˈkwɛvələns), noun