17-letter words containing p, e, r, f
- shutter-preferred — of or relating to a semiautomatic exposure system in which the photographer presets the shutter speed and the camera selects the aperture.
- software platform — a major piece of software, as an operating system, an operating environment, or a database, under which various smaller application programs can be designed to run.
- spatial frequency — the measure of fine detail in an optical image in terms of cycles per millimetre
- spiritus frumenti — whiskey.
- sports facilities — places and things for doing sports
- springfield rifle — a single-shot, breechloading .45-caliber rifle used by the U.S. Army from 1867 to 1893.
- stereospecificity — (of a reaction) producing a simple stereoisomer.
- 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
- strike-slip fault — a geological fault on which the movement is along the strike of the fault
- striped killifish — a killifish, Fundulus majalis, of the Atlantic coast of the U.S., the female of which is marked with black stripes.
- sulfurated potash — a yellowish-brown mixture consisting mainly of potassium polysulfides and potassium thiosulfate, used in treating mange.
- sulphur butterfly — sulfur butterfly.
- supreme sacrifice — the sacrifice of one's own life: Many made the supreme sacrifice during the war.
- temple of artemis — the temple at Ephesus dedicated to Artemis.
- terminal platform — (in the oil industry) an offshore platform from which oil or gas is pumped ashore through a pipeline
- the perfect tense — the tense of a verb that indicates that the action has been completed
- to play with fire — If you say that someone is playing with fire, you mean that they are doing something dangerous that may result in great harm for them and cause many problems.
- traffic policeman — a policeman controlling traffic, esp while stationed at an intersection, or enforcing traffic regulations
- unprofessionalism — not professional; not pertaining to or characteristic of a profession.
- vermiform process — vermiform appendix.
- waiver of premium — a provision in a policy establishing specific conditions under which the policy will be kept in force without the policyholder's being required to continue to pay premiums.
- walleye surfperch — a common black and silvery surfperch (Hyperprosopon argenteum) found off the coast of California
- wave-cut platform — a flat surface at the base of a cliff formed by erosion by waves