12-letter words containing s, p, r, o
- protensively — in the manner of duration
- protest flag — a flag hoisted by a racing yacht to advise the judges of a violation of the rules by another yacht.
- protest vote — a ballot cast for a candidate with a minimal chance of winning, to register dislike for the other candidates.
- protestation — the act of protesting or affirming.
- protistology — the biology of the Protista.
- protohistory — a branch of study concerned with the transition period between prehistory and the earliest recorded history.
- protoplasmic — Biology. (no longer in technical use) the colloidal and liquid substance of which cells are formed, excluding horny, chitinous, and other structural material; the cytoplasm and nucleus.
- protosemitic — the hypothetical parent language of the Semitic group of languages
- protosynthex — A query system for English text.
- provableness — the quality of being provable
- provisionary — providing or serving for the time being only; existing only until permanently or properly replaced; temporary: a provisional government.
- provisioning — a clause in a legal instrument, a law, etc., providing for a particular matter; stipulation; proviso.
- proximities' — nearness in place, time, order, occurrence, or relation.
- proxy server — (software, security) (Capitalised) Microsoft's proxy server and proxy gateway, designed to provide extensible firewall and network security. Proxy Server is part of BackOffice.
- pseudamphora — a Mycenaean vase having a spherical body, a spout on the shoulder, and a handle, curving across the top, supported by a solid conical neck.
- pseudo force — any force that is postulated to account for apparent deviations from Newton's laws of motion appearing in an accelerated reference system.
- pseudocereal — any of several plants, as buckwheat and quinoa, that produce fruits and seeds used as flour but are not of the grass family.
- pseudography — writing that does not follow conventional spelling or usage
- pseudomartyr — someone falsely or inaccurately called a martyr
- pseudorabies — a highly contagious, usually fatal disease of cattle, sheep, and other animals, caused by the herpesvirus Herpes suis, and characterized by severe pruritus and progressive central nervous system involvement sometimes including an aggressive excitement phase.
- pseudorandom — noting or pertaining to random numbers generated by a definite computational process to satisfy a statistical test.
- pseudoscalar — a scalar quantity that changes sign when the sense of the orientation of the coordinate system is changed.
- pseudosphere — a surface generated by revolving a tractrix about its asymptote.
- pseudovector — a variable quantity, such as angular momentum, that has magnitude and orientation with respect to an axis. The components are even functions of the coordinates
- psychography — the supposed writing of a spirit or medium
- psychometric — Psychology. psychometrics.
- psychotronic — of or relating to a genre of usually low-budget movies that includes horror, fantasy, science-fiction, and underground films.
- psychotropic — affecting mental activity, behavior, or perception, as a mood-altering drug.
- psychrometer — an instrument for determining atmospheric humidity by the reading of two thermometers, the bulb of one being kept moist and ventilated.
- psychrometry — the employment of the psychrometer.
- pteridosperm — seed fern.
- pterocarpous — having winged fruit.
- pterosaurian — a pterosaur
- public works — government-funded construction
- purple prose — writing that calls attention to itself because of its obvious use of certain effects, as exaggerated sentiment or pathos, especially in an attempt to enlist or manipulate the reader's sympathies.
- purposefully — having a purpose.
- push forward — keep advancing
- push through — force to accept
- put years on — to make (someone) feel or look much older
- pyloroplasty — the surgical alteration of the pylorus, usually a widening to facilitate the passage of food from the stomach to the duodenum.
- pyonephritis — suppurative inflammation of the kidney.
- pyritiferous — having or producing pyrites
- pyrognostics — the characteristics of a mineral, such as fusibility and flame coloration, that are revealed by the application of heat
- pyroligneous — produced by the distillation of wood.
- pyrosulfuric — of or derived from pyrosulfuric acid; disulfuric.
- pyrosulphate — any salt of pyrosulphuric acid
- pyrotechnics — the art of making fireworks.
- pyrotechnist — a person skilled in pyrotechnics, especially in the manufacture or use of fireworks.
- radioisotope — a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.
- radiophonist — a person who produces radiophonic music