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re-entrant

British  
/ riːˈɛntrənt /

adjective

  1. (of an angle, esp in fortifications) pointing inwards Compare salient

  2. maths (of an angle in a polygon) greater than 180° and thus pointing 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

noun

  1. 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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When heart rhythm abnormality occurs in a self-sustained manner, it is called re-entrant arrhythmia, which is usually fatal.

From Science Daily • Jan. 9, 2024

For Chalmers, the easy part of consciousness entails mapping exactly what the brain is doing, whether it is oscillations in the cerebral cortex or re-entrant loops in the thalamocortical system.

From The Guardian • Jun. 19, 2018

Beyond it, the ditch and trees curved back again in a re-entrant, so that the field formed a bay with a bank running all the way round.

From "Watership Down: A Novel" by Richard Adams

Hoek A re-entrant in a range of hills; literally corner; also used for pass and ravine.

From History of the War in South Africa 1899-1902 v. 1 (of 4) Compiled by Direction of His Majesty's Government by Great Britain. War Office

As in the bottle of commerce, the bottom is re-entrant, and the shore-reef runs prominently forth into the basin and makes a dangerous cape opposite the fairway of the entrance.

From The Works of Robert Louis Stevenson - Swanston Edition Vol. 17 (of 25) by Stevenson, Robert Louis

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