13-letter words containing y, t, r, i
- your nineties — the ages between 90–99
- yttrium metal — any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.
- yttrium oxide — a white, water-insoluble powder, Y 2 O 3 , used chiefly in incandescent gas and acetylene mantles.
- yttrotitanite — (mineralogy) A brownish-black variety of titanite.