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Webster 1913 Edition
Deut-
Deu′to-
orDeut-
(dūt-)
[Contr. from Gr.
δεύτεροσ
second.] (Chem.)
A prefix which formerly properly indicated the second in a regular series of compound in the series, and not to its composition, but which is now generally employed in the same sense as
bi-
or di-
, although little used.