re-entrant
Concise Oxford English Dictionary © 2008 Oxford University Press:
re-entrant/rɪˈɛntr(ə)nt/
▶adjective (of an angle) pointing inwards. The opposite of salient. ▶noun
- 1 a re-entrant angle; an indentation.
- 2 a person who has re-entered something.
're-entrant' also found in these Oxford entries:

