Definition of "reentrant" in English

adjective

1. Reentering; pointing inward.

2. (programming, of a mutex) Such that the corresponding lock can be reacquired by the locking thread.

   • The global interpreter lock of the embedded scripting engine is not reentrant.

3. (programming) That may be executed more than once at a time either by different threads, or because of recursion.

   • Global variables must not be altered by reentrant code.

4. (aeronautics, of a part of a rocket) Designed to return to the Earth's atmosphere.

5. (physiology) Of or pertaining to reentry (in the heart).

6. (music, of a ukulele or similar instrument) Having the strings not ordered according to pitch (having a re-entry).

noun

1. An angle or part that reenters itself.

2. One who enters (the labour market, etc.) again.

3. (geography) A valley between a pair of parallel ridges.