17-letter words containing u, b, e, r, t, y
- thistle butterfly — any nymphalid butterfly of the genus Vanessa, as the red admiral or painted lady.
- troilus butterfly — spicebush swallowtail.
- turbidity current — a turbid, dense current of sediments in suspension moving along the slope and bottom of a lake or ocean.
- understandability — capable of being understood; comprehensible.
- vestibular system — the sensory mechanism in the inner ear that detects movement of the head and helps to control balance