13-letter words containing r, i, o, p, e, l
- triple double — a score in a basketball game of at least ten points, ten rebounds, and ten assists by a single player.
- triple-double — a score in a basketball game of at least ten points, ten rebounds, and ten assists by a single player.
- triple-tongue — to interrupt the wind flow by moving the tongue as if pronouncing t and t and k successively, especially in playing rapid passages or staccato notes on a brass instrument.
- trompe l'oeil — visual deception, especially in paintings, in which objects are rendered in extremely fine detail emphasizing the illusion of tactile and spatial qualities.
- trophic level — any class of organisms that occupy the same position in a food chain, as primary consumers, secondary consumers, and tertiary consumers.
- tropical year — year (def 4b).
- tropical zone — Torrid Zone
- unpolarizable — not capable of being polarized
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unresponsible — answerable or accountable, as for something within one's power, control, or management (often followed by to or for): He is responsible to the president for his decisions.
- uprighteously — in an upright or moral manner
- vinyl polymer — any of a group of compounds derived by polymerization from vinyl compounds, as vinyl acetate and styrene.
- violin spider — brown recluse spider.
- volute spring — a coil spring, conical in shape, extending in the direction of the axis of the coil.
- walter piston — Walter, 1894–1976, U.S. composer.
- well-provided — having been furnished or supplied with a sufficient amount
- will to power — (in the philosophy of Nietzsche) the self-assertive creative drive in all individuals, regarded as the supreme quality of the superman.
- xerophthalmia — abnormal dryness of the eyeball characterized by conjunctivitis, caused by a deficiency of tears and attributed to a lack of vitamin A.
- xerophthalmic — Of or pertaining to xerophthalmia.
- york imperial — an American variety of yellow or green apple with red stripes.