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

  • transitive v. To repeat over and again; redouble.
  • transitive v. Linguistics To double (the initial syllable or all of a root word) to produce an inflectional or derivational form.
  • transitive v. Linguistics To form (a new word) by doubling all or part of a word.
  • intransitive v. To be doubled.
  • adj. Doubled.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. doubled
  • v. To repeat a word or section of a word in order to form a new word or phrase, possibly with modification of one of the repetitions.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Double; doubled; reduplicative; repeated.
  • adj. Valvate with the margins curved outwardly; -- said of the �stivation of certain flowers.
  • transitive v. To redouble; to multiply; to repeat.
  • transitive v. To repeat the first letter or letters of (a word). See Reduplication, 3.

from The Century Dictionary and Cyclopedia

  • To double again; multiply; repeat.
  • In philology, to repeat, as a syllable or the initial part of a syllable (usually a root-syllable). See reduplication.
  • In philology, to be doubled or repeated; undergo reduplication: as, reduplicating verbs.
  • Redoubled; repeated; reduplicative.
  • In botany:
  • Valvate, with the edges folded back so as to project outward: said of petals and sepals in one form of estivation.
  • Describing an estivation so characterized. Also reduplicative.

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

  • v. form by reduplication
  • v. make or do or perform again


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

Late Latin reduplicāre, reduplicāt- : Latin re-, re- + Latin duplicāre, to duplicate; see duplicate.



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