[ri-doost, -dyoost]
that is or has been reduced.
Mathematics. noting a polynomial equation in which the second highest power is missing: The cubic equation x 3 − 4x + 4 = 0 is reduced.

1620–30; reduce + -ed2

nonreduced, adjective
quasi-reduced, adjective
unreduced, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin & History

late 14c., "bring back," from O.Fr. reducer (14c.), from L. reducere, from re- "back" + ducere "bring, lead" (see duke). Sense of "to lower, diminish, lessen" is from 1787. Etymological sense preserved in military reduce to ranks (1640s). Reduction is attested from late 15c.;
reductionism in philosophy is recorded from 1948.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

reduce re·duce (rĭ-dōōs', -dyōōs')
v. re·duced, re·duc·ing, re·duc·es

  1. To bring down, as in extent, amount, or degree; diminish.

  2. To lose weight, as by dieting.

  3. To restore a fractured or displaced body part to a normal condition or position.

  4. To decrease the valence of an atom by adding electrons.

  5. To remove oxygen from a compound.

  6. To add hydrogen to a compound.

re·duc'er n.
re·duc'i·bil'i·ty n.
re·duc'i·ble adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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