tri, n.m., “tri” (card game); sorting; trick (whist).
triable, adj., sortable.
triade, n.f., triad.
triage, n.m., choosing, picking, sorting; choice, selection.
triandre, adj., (bot.) triandrous.
triandrie, n.f., (bot.) triandria.
triangle, n.m., (geom., astron., mus.) triangle; (nav.) triangular hanging stage (for calking).
triangulaire, adj., triangular.
triangulairement, adv., triangularly.
triangulation, n.f., triangulation; trigonometrical survey.