isoler, v.a., to isolate, to insulate, to detach, to separate.
s’isoler, v.r., to be isolated, insulated, to shun society.
isoloir, n.m., (phys.) insulator.
isomère, adj., (min. chem.) isomeric.
isotherme, adj., isothermal.
israélite (iz-), n.m.f. and adj., Israelite; Israelitic, Israelitish, Jewish. Un bon —; a plain, simple man.
issu, -e, adj., born, descended, or sprung from.
issue, n.f., issue, egress, outlet; end, event; loophole, escape, refuse grain; offal (of animals). À l’— de; on leaving, after.
isthme, n.m., isthmus.
isthmiques, adj.m.pl., (antiq.) Isthmian. Jeux —; Isthmian games.