17-letter words containing p, a, r, d, i, s
- radio-transparent — transparent to radiation; invisible in x-ray photographs and under fluoroscopy (opposed to radiopaque).
- reverse apartheid — a perceived bias against White people following the end of Apartheid
- rhodope mountains — a mountain range in SE Europe, in the Balkan Peninsula extending along the border between Bulgaria and Greece. Highest peak: Golyam Perelik (Bulgaria), 2191 m (7188 ft)
- sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
- self-depreciating — self-deprecating.
- sexual dimorphism — the condition in which the males and females in a species are morphologically different, as with many birds.
- six-speed gearbox — a gearbox containing a system of six gears
- sleep deprivation — a condition in which you have not had enough sleep
- sodium propionate — a transparent, crystalline, water-soluble powder, C 3 H 5 NaO 2 , used in foodstuffs to prevent mold growth, and in medicine as a fungicide.
- sodium pyroborate — borax1 .
- sodium-vapor lamp — an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways.
- spectroradiometer — an instrument for determining the radiant-energy distribution in a spectrum, combining the functions of a spectroscope with those of a radiometer.
- spiny-headed worm — any of a small group of endoparasites of the phylum Acanthocephala, as larvae parasitic in insects and crustaceans and as adults in various vertebrates.
- split keyboarding — the act or practice of editing data from one terminal on another terminal
- spotted sandpiper — a North American sandpiper, Actitis macularia, that has brownish-gray upper parts and white underparts, and is spotted with black in the summer.
- spread your wings — if you spread your wings, you do something new and rather difficult or move to a new place, because you feel more confident in your abilities than you used to and you want to gain wider experience
- spruce gall aphid — any of various homopterous insects of the family Adelgidae, as Adelges abietis (spruce gall aphid) and Pineus pinifoliae (pine leaf aphid) that feed and form galls on conifers.
- st. crispin's day — October 25: anniversary of the Battle of Agincourt (1415).
- stars and stripes — US national flag
- stratified sample — a sample that is not drawn at random from the whole population, but separately from a number of disjoint strata of the population in order to ensure a more representative sample
- stymphalian birds — a flock of predacious birds of Arcadia that were driven away and killed by Hercules as one of his labors.
- superaerodynamics — the branch of aerodynamics that deals with gases at very low densities.
- supervisory board — a board of management of which nonmanagerial workers are members, having supervisory powers over some aspects of management decision-making
- telescopic damper — a device with telescopic parts that reduce vibration in a motor vehicle
- the tabloid press — (considered as a whole) newspapers with pages about 30 cm (12 inches) by 40 cm (16 inches), usually characterized by an emphasis on photographs and a concise and often sensational style
- triskaidekaphobia — fear or a phobia concerning the number 13.
- undercompensation — to compensate or pay less than is fair, customary, or expected.
- unpredictableness — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- vice-presidential — relating to a person who ranks immediately below the chief executive or head of state of a republic
- video disk player — a device that reads the information on a video disc
- visually impaired — (of a person) having reduced vision so severe as to constitute a handicap.
- wild sarsaparilla — a low plant, Aralia nudicaulis, of the ginseng family, native to eastern North America, having a single, long-stalked, compound leaf and a ball-like cluster of greenish-yellow flowers.
- wood preservative — a coating applied to timber as a protection against decay, insects, weather, etc