Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A condition that must exist or be established before something can occur or be considered; a prerequisite.
  • transitive verb To condition, train, or accustom in advance.

from The Century Dictionary.

  • noun An antecedent condition; a condition requisite in advance; a prerequisite.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A previous or antecedent condition; a preliminary condition.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A requirement which must be satisfied before taking a course of action.
  • verb medicine, biology To condition in advance

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an assumption on which rests the validity or effect of something else
  • noun an assumption that is taken for granted
  • noun a condition that is a prerequisite
  • verb put into the required condition beforehand

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

pre- +‎ condition

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