Term Name:	protium atom
Synonyms:	(1)1H, (1)H, H, hydrogen-1, protio, protium
Definition:	The stable isotope of hydrogen with relative atomic mass 1.007825 and a natural abundance of 99.9885 atom percent (from Greek pirhoomegatauomicronsigma, first).
Ontology:	ChEBI [CHEBI:29236]  ( EBI )