17-letter words containing e, p, i, s, c, o
- potassium acetate — a white, crystalline, deliquescent, water-soluble powder, KC 2 H 3 O 2 , used chiefly as a reagent in analytical chemistry.
- potassium cyanide — a white, granular, water-soluble, poisonous powder, KCN, having a faint almondlike odor, used chiefly in metallurgy and photography.
- prairie provinces — the Canadian provinces of Manitoba, Saskatchewan, and Alberta, which lie in the N Great Plains region of North America: the chief wheat and petroleum producing area of Canada
- pre-modifications — an act or instance of modifying.
- precision bombing — aerial bombing in which bombs are dropped, as accurately as possible, on a specific, usually small, target.
- precision casting — investment casting.
- prefect apostolic — the administrator, usually below the rank of bishop, in charge of a prefecture apostolic.
- prescription drug — medication available only on doctor's instruction
- presentation copy — a copy of a book given by the publisher or author
- presiding officer — the person who presides over the Scottish Parliament or Welsh Assembly
- press association — an organization formed for the purpose of gathering news for transmittal to its members. Compare news agency.
- primary processes — the generally unorganized mental activity characteristic of the unconscious and occurring in dreams, fantasies, and related processes.
- production system — (programming) A production system consists of a collection of productions (rules), a working memory of facts and an algorithm, known as forward chaining, for producing new facts from old. A rule becomes eligible to "fire" when its conditions match some set of elements currently in working memory. A conflict resolution strategy determines which of several eligible rules (the conflict set) fires next. A condition is a list of symbols which represent constants, which must be matched exactly; variables which bind to the thing they match and "<> symbol" which matches a field not equal to symbol. Example production systems are OPS5, CLIPS, flex.
- production values — the quality of a media production (such as a film) in regards to elements such as colours, quality, style, etc
- prostatic utricle — a small pouch near the prostate gland that opens into the urethra.
- protected species — a species of animal or plant which it is forbidden by law to harm or destroy
- protective system — protectionism (def 1).
- proton microscope — a powerful type of microscope that uses a beam of protons, giving high resolution and sharp contrast
- pseudo-biological — pertaining to biology.
- pseudo-democratic — pertaining to or of the nature of democracy or a democracy.
- pseudo-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- pseudo-humanistic — a person having a strong interest in or concern for human welfare, values, and dignity.
- pseudo-moralistic — a person who teaches or inculcates morality.
- pseudo-scientific — any of various methods, theories, or systems, as astrology, psychokinesis, or clairvoyance, considered as having no scientific basis.
- psychoeducational — designating or of psychological methods, as intelligence tests, used in evaluating learning ability
- psychometric test — a test designed to test a person's mental state, personality and thought processes
- psychotherapeutic — psychotherapy.
- pterygoid process — either of two long bony plates extending downwards from each side of the sphenoid bone within the skull
- public prosecutor — an officer charged with the conduct of criminal prosecution in the interest of the public.
- public television — a type of noncommercial, usually educational, television programming funded by the government, grants, viewers, and corporations. Compare educational television.
- purple of cassius — a purple pigment precipitated as a sol by the interaction of gold chloride and a solution of stannic acid and stannous chloride: used chiefly in the manufacture of ruby glass, ceramic glazes, and enamels.
- pyroligneous acid — a yellowish, acidic, water-soluble liquid, containing about 10 percent acetic acid, obtained by the destructive distillation of wood: used for smoking meats.
- quasi-competitive — of, pertaining to, involving, or decided by competition: competitive sports; a competitive examination.
- recoil escapement — anchor escapement.
- recovery position — a position in which an unconscious person can be lain on the floor, which minimises them from further risk
- repertory society — a group that supports amateur performances of plays by its members
- rescue operations — operations or organized procedures to bring people or a person out of danger, attack, harm, etc
- respiratory chain — a series of mitochondrial proteins that transport electrons of hydrogen, released in the Krebs cycle, from acetyl coenzyme A to inhaled oxygen to form H 2 O: the energy released in the process is conserved as ATP.
- respiratory tract — the passages through which air enters and leaves the body
- rocket propulsion — propulsion of an object by thrust developed by a rocket.
- sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
- safety inspection — an inspection of a place carried out to ensure that it is safe and not dangerous
- safety precaution — a precaution that is taken in order to ensure that something is safe and not dangerous
- saint christopher — Saint, died a.d. c250, Christian martyr.
- scheme repository — A collection of free Scheme programs.
- schizophrenogenic — causative of schizophrenia.
- schmidt telescope — a wide-angle reflecting telescope used primarily for astronomical photography, in which spherical aberration and coma are reduced to a minimum by means of a spherical mirror with a corrector plate near its focus.
- scrophulariaceous — belonging to the Scrophulariaceae, the figwort family of plants.
- self-appreciation — gratitude; thankful recognition: They showed their appreciation by giving him a gold watch.
- self-emancipation — the act of emancipating.