reentrant

1 of 2

adjective

re·​en·​trant (ˌ)rē-ˈen-trənt 

: directed inward

reentrant

2 of 2

noun

1

: one that reenters

2

: one that is reentrant

3

: an indentation in a landform

Word History

First Known Use

Adjective

1780, in the meaning defined above

Noun

1893, in the meaning defined at sense 3