16-letter words containing p, o, s, l, e
- transport police — the national police force for railways in Britain, which protects rail operators, staff and passengers
- 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.
- troop the colors — to parade the colors, or flag, before troops
- 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
- twofold purchase — a purchase using a double standing block and a double running block so as to give a mechanical advantage of four or five, neglecting friction, depending on whether the hauling is on the standing block or the running block.
- unaccomplishable — to bring to its goal or conclusion; carry out; perform; finish: to accomplish one's mission.
- uncomprehensible — capable of being comprehended or understood; intelligible.
- under bare poles — (of a sailing vessel) with no sails set
- unimpressionable — easily impressed or influenced; susceptible: an impressionable youngster.
- unpublished work — a literary work that has not been reproduced for sale or publicly distributed.
- unscrupulousness — not scrupulous; unrestrained by scruples; conscienceless; unprincipled.
- up to the elbows — deeply engaged (in work, etc.)
- upsilon particle — the 20th letter of the Greek alphabet (Υ, υ).
- vegetable sponge — loofah (def 2).
- verneuil process — a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds.
- videodisc player — an electronic device for playing videodiscs through a television set.
- well-compensated — to recompense for something: They gave him ten dollars to compensate him for his trouble.
- well-upholstered — (of a person) fat
- will-o'-the-wisp — ignis fatuus (def 1).
- windowpane shell — capiz.
- world exposition — world's fair.
- xenotransplanted — Transplanted by xenotransplantation.
- zenith telescope — a telescope mounted to point only at the zenith, used at some observatories for measuring time by the stars.