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reentrant

or re-entrant

[ree-en-truh nt] /riˈɛn trənt/
adjective
1.
reentering or pointing inward:
a reentrant angle.
noun
2.
a reentering angle or part.
3.
a person or thing that reenters or returns:
Reentrants to the engineering program must take the introductory course again.
4.
Physical Geography. a prominent indentation in a coastline.
Compare salient (def 6).
Origin of reentrant
1775-1785
First recorded in 1775-85; re- + entrant
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for re-entrant

re-entrant

/riːˈɛntrənt/
adjective
1.
(of an angle, esp in fortifications) pointing inwards Compare salient (sense 2)
2.
(maths) (of an angle in a polygon) greater than 180° and thus pointing inwards
noun
3.
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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