noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A higher than normal valency (typically involving a transfer of the electrons from the central (hypervalent) atom to the nonbonding molecular orbitals which it forms with (usually more electronegative) ligands) uncountable, usually

Etymology

From hyper- + valency.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.