present participle of sit in on

(intransitive, copulative, of a person) To be in a position in which the upper body is upright and supported by the buttocks. / (intransitive, of a person) To move oneself into such a position.

(mining) Subsidence of the roof of a coal mine. / (rare, Buddhism) An event, usually lasting one full day or more, where the primary goal is to sit in meditation.

(informal) Short for situation.

plural of sit

Third-person singular simple present indicative form of sit

(idiomatic) To substitute; to take somebody's place.

A peaceful form of protest in which people occupy an area and refuse to leave.

Designed to be sat in.

To attend a private meeting or class without participating.