opercule, n.m., operculum, cover.
operculé, -e, adj., opercular, operculated.
opérer, v.a., to operate, to effect, to bring about, to perform, to work, to act; to manage, to contrive. Se faire —; to undergo an operation.
opérer, v.n., to work, to operate.
s’opérer, v.r., to take place, to come about, to be brought about.
opérette, n.f., operetta.
opes, n.m.pl., (arch.) opes; (mas.) scaffold-holes, putlog holes.
ophicléide, n.m., ophicleide.
ophidien, -ne (-di-in, -è-n), adj., ophidian.
ophidiens (-di-in), n.m.pl., ophidians.