protiums
A member of the Dena'ina people, a Native American tribe of the region surrounding Cook Inlet on the southern coast of Alaska.
(obsolete) The act of restraining oneself. / The act of abstaining or refraining (from). / The act of declining to vote on a particular issue.
plural of protium
plural of terrain
化学者は試料中のプロチウム原子を注意深く数えて、水素同位体組成を決定した。
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