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