• synonyms


or re-en·trant

[ree-en-truh nt]
  1. reentering or pointing inward: a reentrant angle.
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  1. a reentering angle or part.
  2. a person or thing that reenters or returns: Reentrants to the engineering program must take the introductory course again.
  3. Physical Geography. a prominent indentation in a coastline.Compare salient(def 6).
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Origin of reentrant

First recorded in 1775–85; re- + entrant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for re-entrant

Historical Examples of re-entrant

  • The re-entrant rectangles on the bracelet represented in Fig. 4, Pl.

    Navajo Silversmiths

    Washington Matthews

  • The Turkish left rested securely on a re-entrant bend of the Tigris.

  • The crowded Infantry waiting in support would certainly have been driven out of the re-entrant with frightful slaughter.

    London to Ladysmith via Pretoria

    Winston Spencer Churchill

  • Note especially the variation in complexity of occlusal pattern, width of re-entrant folds, and degree of tubercularity.

  • In several specimens, however, the re-entrant fold is absent from the lingual surface of M1.

British Dictionary definitions for re-entrant


  1. (of an angle, esp in fortifications) pointing inwardsCompare salient (def. 2)
  2. maths (of an angle in a polygon) greater than 180° and thus pointing inwards
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  1. an angle or part that points inwards
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012