• synonyms


[ree-in-fawrs-muh nt, -fohrs-]
See more synonyms for reinforcement on Thesaurus.com
  1. the act of reinforcing.
  2. the state of being reinforced.
  3. something that reinforces or strengthens.
  4. Often reinforcements. an additional supply of personnel, ships, aircraft, etc., for a military force.
  5. a system of steel bars, strands, wires, or mesh for absorbing the tensile and shearing stresses in concrete work.
  6. Psychology.
    1. a procedure, as a reward or punishment, that alters a response to a stimulus.
    2. the act of reinforcing a response.
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Origin of reinforcement

First recorded in 1600–10; reinforce + -ment
Related formsnon·re·in·force·ment, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for reinforcements

Contemporary Examples

Historical Examples

  • Moreover, the rivers are always ours and reinforcements will soon pour in to us.

    The Rock of Chickamauga

    Joseph A. Altsheler

  • Howe's reinforcements had reported for duty by the thirty-first of December.

  • Reinforcements of men and women are needed, but, far above all, reinforcements of prayer.

    Things as They Are

    Amy Wilson-Carmichael

  • Meanwhile Agesilaus was rapidly hastening with his reinforcements from Asia.



  • Whilst these matters were still pending, the second reinforcements from Dionysius arrived.



Word Origin and History for reinforcements



c.1600, "act of reinforcing," from reinforce + -ment. Meaning "an augmentation, that which reinforces" is from 1650s. Related: Reinforcements.

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Online Etymology Dictionary, © 2010 Douglas Harper

reinforcements in Medicine


  1. The act or process of reinforcing.
  2. Something that reinforces.
  3. The occurrence or experimental introduction of an unconditioned stimulus along with a conditioned stimulus.
  4. The strengthening of a conditioned response by such means.
  5. An event, a circumstance, or a condition that increases the likelihood that a given response will recur in a situation like that in which the reinforcing condition originally occurred.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.