con-cēnātĭo (-caen-,-coen-), ōnis, f.,
a supping together, companionship at table; transl. of σύνδειπνον (like compotatio of συμπόσιον), Cic. Sen. 13, 45; id. Fam. 9, 24, 3.
con-cēnātiō (not -coen-), ōnis, f a supping together, companionship at table. ...
An Elementary Latin Dictionary