n. 1 the process of assembly of a deliberative or judicial body to conduct its business. 2 a single meeting for this purpose. 3 a period during which such meetings are regularly held. 4 a an academic year. b the period during which a school etc. has classes. 5 a period devoted to an activity (poker session; recording session). 6 the governing body of a Presbyterian Church. in session assembled for business; not on vacation. petty sessions 1 a meeting of two or more magistrates for the summary trial of certain offences. 2 = quarter sessions. sessional adj.
[ ME f. OF session or L sessio -onis (as SESSILE) ]