in duration

[ in-doo-rey-shuh n, -dyoo- ]SEE DEFINITION OF in duration
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

late 14c., from Old French induracion "hardness, obstinacy" (14c.) or directly from Medieval Latin indurationem (nominative induratio) "hardness (especially of the heart)," noun of action from indurare (see endure).

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.