/ak"ting/ , adj.
1. serving temporarily, esp. as a substitute during another's absence; not permanent; temporary: the acting mayor.
2. designed, adapted, or suitable for stage performance.
3. provided with detailed stage directions for the performer: an acting version of a play.
n.
4. the art, profession, or activity of those who perform in stage plays, motion pictures, etc.
[ 1595-1605; ACT + -ING 2 , -ING 1 ]
Syn. 1. provisional, interim.