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protium

[ proh-tee-uhm, -shee-uhm ]
/ ˈproʊ ti əm, -ʃi əm /
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noun Chemistry.
the lightest and most common isotope of hydrogen. Symbol:1H
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Origin of protium

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

Words nearby protium

prothorax, prothrombin, protist, Protista, protistology, protium, proto-, protoactinium, Proto-Algonquian, protoavis, protocal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use protium in a sentence

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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