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or re-entrant

[ree-en-truh nt] /riˈɛn trənt/
reentering or pointing inward:
a reentrant angle.
a reentering angle or part.
a person or thing that reenters or returns:
Reentrants to the engineering program must take the introductory course again.
Physical Geography. a prominent indentation in a coastline.
Compare salient (def 6).
Origin of reentrant
First recorded in 1775-85; re- + entrant Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for re-entrant
Historical Examples
  • 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.

  • Such a ring made to pass the re-entrant corner of a wall—the edge of a window recess, for example—will appear to be attracted.

    Lord Kelvin Andrew Gray
  • It goes north to avoid a prominent spur in the range and a re-entrant angle at the further side.

    The Old Road Hilaire Belloc
  • The village lay in a re-entrant of the hills, from which two long spurs projected like the piers of a harbour.

    The Story of the Malakand Field Force Sir Winston S. Churchill
  • The path debouched about the midst of the re-entrant angle, the woods stopping some distance inland.

    In the South Seas Robert Louis Stevenson
  • Cross section: irregular, with re-entrant angles, and little cohesion.

British Dictionary definitions for re-entrant


(of an angle, esp in fortifications) pointing inwards Compare salient (sense 2)
(maths) (of an angle in a polygon) greater than 180° and thus pointing inwards
an angle or part that points inwards
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
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