单词 quinquivalent 释义 quinquivalent, a. Chem.|kwnkwvlnt|[f. L. quinqui- five- + valent as in equivalent, quadrivalent.]Capable of combining with five univalent atoms; pentavalent.1877Watts Fownes' Chem. I. 256 Quinquivalent elements, or Pentads.1880E....