■ noun
1》 a period devoted to a particular activity: a training ~.
↘a period of recording music in a studio.
↘ informal a period of heavy or sustained drinking.
2》 (often in phr. in ~ ) a meeting of a deliberative or judicial body to conduct its business.
↘a period during which such meetings are regularly held.
3》 the part of a year or a day during which teaching takes place in a school or college.
4》 the governing body of a Presbyterian Church.
Derivatives
~al adjective
Origin
ME: from OFr., or from L. sessio(n-) , from sess- (see sessile ).