from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To have as a requisite; need: Most plants require sunlight.
  • transitive v. To call for as obligatory or appropriate; demand. See Synonyms at demand.
  • transitive v. To impose an obligation on; compel: Students are required to attend classes.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To demand; to insist upon having; to claim as by right and authority; to exact.
  • transitive v. To demand or exact as indispensable; to need.
  • transitive v. To ask as a favor; to request.

from The Century Dictionary and Cyclopedia

  • To search for; seek.
  • To ask for as a favor; request.
  • To ask or claim, as of right and by authority; demand; insist on having; exact.
  • To ask or order to do something; call on.
  • To have need or necessity for; render necessary or indispensable; demand; need; want.
  • =Syn. 2–4. Request, Beg, etc. (see ask), enjoin (upon), prescribe, direct, command.

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

  • v. have need of
  • v. make someone do something
  • v. consider obligatory; request and expect
  • v. require as useful, just, or proper


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English requiren, from Old French requerre, from Vulgar Latin *requaerere, alteration (influenced by quaerere, to seek) of Latin requīrere : re-, re- + quaerere, to seek.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Old French requerre (French: requérir), from Vulgar Latin *requærere, from Latin requīrō ("I require, seek, ask for").



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