noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The normal hydride ion using protium.

Synonyms

All synonyms

amino acidprotein

Etymology

From proto- + -ide. From protium, from Ancient Greek πρῶτος (prôtos, “first”).

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