oratorien (-in), n.m., Oratorian.
oratorio, n.m., (mus.) oratorio.
orbe, n.m., (astron.) orbit; orb. pl., folds, coils (of a serpent); (ich.) orbis, orb-fish.
orbe, adj., (surg.) contusing (of blows).
orbiculaire, adj., orbicular.
orbiculairement (-lèr-mān), adv., orbicularly.
orbiculé, -e, adj., (bot.) orbicular, orbiculate, orbiculated.
orbitaire, adj., (anat.) orbital.
orbite, n.f., (astron.) orbit; (anat.) orbit, socket. L’— de l’œil; the socket of the eye.
orcanète, n.f., (bot.) orchanet, alkanet, dyer’s-bugloss, dyer’s-gromwell.