observantin, n.m., Observant Franciscan.
observat-eur, -rice, n. and adj., observer; observant, observing, spy, looker-on. Un esprit —; an observing mind.
observation, n.f., observance; observation, remark, hint; (fig.) fulfillment, accomplishment. Être en —; to be on the look-out.
observatoire, n.m., observatory.
observer, v.a., to observe, to mind, to notice; to point out (to); to watch, to keep a watch over; to practice, to fulfill, to perform. — les lois; to observe the laws. Lui avez-vous fait — que? did you point out to him that? Faire —; to remind, to call a person’s attention to.
s’observer, v.r., to be circumspect, to be cautious, to look about one’s self; to eye one another; to be on one’s guard; to keep a check upon one’s self.
obsesseur, adj., besetting.
obsession, n.f., besetting, obsession; being possessed of.
obsidiane or obsidienne, n.f., (min.) obsidian (volcanic glass).
obsidional, -e, adj., obsidional. Couronne —e; obsidional crown.