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Dictionary

deu•te•ri•um

Pronunciation: (dOO-tēr'ē-um, dyOO-), [key]
—n. Chem.
an isotope of hydrogen, having twice the mass of ordinary hydrogen; heavy hydrogen. Symbol: D; at. wt.: 2.01; at. no.: 1.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

deuteride

deutero-

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