16-letter words containing o, p, e, r, a, s
- uncinate process — a curved, bony process on certain ribs of birds that projects backward and overlaps the succeeding rib, serving to strengthen the thorax.
- under bare poles — (of a sailing vessel) with no sails set
- undercompensated — to compensate or pay less than is fair, customary, or expected.
- unimpressionable — easily impressed or influenced; susceptible: an impressionable youngster.
- up to one's ears — the organ of hearing and equilibrium in vertebrates, in humans consisting of an external ear that gathers sound vibrations, a middle ear in which the vibrations resonate against the tympanic membrane, and a fluid-filled internal ear that maintains balance and that conducts the tympanic vibrations to the auditory nerve, which transmits them as impulses to the brain.
- upper atmosphere — the portion of the atmosphere above the troposphere.
- upsilon particle — the 20th letter of the Greek alphabet (Υ, υ).
- vest-pocket park — pocket park.
- videodisc player — an electronic device for playing videodiscs through a television set.
- writ of subpoena — a legal document commanding the attendance in court, as a witness, of the person on whom it is served, under a penalty
- xenotransplanted — Transplanted by xenotransplantation.