16-letter words containing p, e, t, i, o
- topical-sentence — a sentence that expresses the essential idea of a paragraph or larger section, usually appearing at the beginning.
- topless swimsuit — swimsuit which has no covering for the breasts
- topsail schooner — a sailing vessel fore-and-aft rigged on all of two or more masts with square sails above the foresail, and often with a square sail before the foresail.
- torsion pendulum — a pendulum the weight of which is rotated alternately in opposite directions through a horizontal plane by the torsion of the suspending rod or spring: used for clocks intended to run a long time between windings.
- transpeptidation — the process of transferring an amino acid or group of amino acids from one compound to another.
- transport police — the national police force for railways in Britain, which protects rail operators, staff and passengers
- trap-door spider — any of several burrowing spiders, of the family Ctenizidae, that construct a tubular nest with a hinged lid.
- trapezoidal rule — a numerical method for evaluating the area between a curve and an axis by approximating the area with the areas of trapezoids.
- trial separation — an experimental period of living apart
- triple-expansion — noting a power source, especially a steam engine, using the same fluid at three successive stages of expansion to do work in three or more cylinders.
- tropic of cancer — Geography. either of two corresponding parallels of latitude on the terrestrial globe, one (tropic of Cancer) about 23½° N, and the other (tropic of Capricorn) about 23½° S of the equator, being the boundaries of the Torrid Zone. the tropics, the regions lying between and near these parallels of latitude; the Torrid Zone and neighboring regions.
- tropical cyclone — a cyclone that originates over a tropical ocean area and can develop into the destructive storm known in the U.S. as a hurricane, in the western Pacific region as a typhoon, and elsewhere by other names. Compare extratropical cyclone, hurricane (def 1), willy-willy.
- turn upside down — invert
- two-percent milk — Two-percent milk is milk from which some of the cream has been removed.
- two-tailed pasha — a distinctive vanessid butterfly of S Europe, Charaxes jasius, having mottled brown wings with a yellow-orange margin and frilled hind edges
- unapologetically — containing an apology or excuse for a fault, failure, insult, injury, etc.: An apologetic letter to his creditors explained the delay.
- uncinate process — a curved, bony process on certain ribs of birds that projects backward and overlaps the succeeding rib, serving to strengthen the thorax.
- underconsumption — the act of consuming, as by use, decay, or destruction.
- united provinces — (used with a singular or plural verb) former name of Uttar Pradesh.
- up-to-the-minute — extending to the present moment, as information, facts, or style: an up-to-the-minute news report.
- upsilon particle — the 20th letter of the Greek alphabet (Υ, υ).
- ventriculography — radiography of the ventricles of the heart after injection of a contrast medium
- voice production — the use of the voice in order to create particular effects
- walk a tightrope — be in a precarious position
- white propaganda — propaganda that comes from the source it claims to come from
- will-o'-the-wisp — ignis fatuus (def 1).
- wimp environment — WIMP
- wipe off the map — to put out of existence
- world exposition — world's fair.
- 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
- zenith telescope — a telescope mounted to point only at the zenith, used at some observatories for measuring time by the stars.
- zero-zero option — (in international nuclear arms negotiations) an offer to remove all intermediate-range nuclear missiles, if the other side will do the same