protium

[ proh-tee-uh m, -shee-uh m ]
/ ˈproʊ ti əm, -ʃi əm /

noun Chemistry.

the lightest and most common isotope of hydrogen. Symbol: H1

Origin of protium

First recorded in 1930–35; prot- + -ium

Words nearby protium

prothrombin test, prothrombinase, protist, protista, protistology, protium, proto team, proto-, proto-algonquian, proto-doric, proto-elamite

Example sentences from the Web for protium

British Dictionary definitions for protium

protium
/ (ˈprəʊtɪəm) /

noun

the most common isotope of hydrogen, having a mass number of 1

Word Origin for protium

C20: New Latin, from proto- + -ium

Medical definitions for protium

protium
[ prō′tē-əm, prō′shē- ]

n.

hydrogen-1

Scientific definitions for protium

protium
[ prō′tē-əm, -shē-əm ]

The most abundant isotope of hydrogen, having an atomic mass of 1. Its nucleus consists of a single proton. See more at hydrogen.