threefold

English

Etymology

From Middle English threfold, from Old English þrīfeald. Equivalent to three +‎ -fold

Pronunciation

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Adjective

threefold (not comparable)

  1. three times as great
  2. triple

Translations

Adverb

threefold (not comparable)

  1. by a factor of three

Translations

Noun

threefold (plural threefolds)

A threefold, the twisted cubic.
  1. (mathematics) An algebraic variety of degree 3.
    • 2015, Xun Yu, “McKay correspondence and new Calabi-Yau threefolds”, in (Please provide the book title or journal name)‎:
      In this way, we find some new pairs $(h^{1,1},\;h^{2,1})$ of Hodge numbers of Calabi-Yau threefolds.

Alternative forms

  • three-fold
  • 3-fold
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