12-letter words containing a, r, i, d
- privatdocent — (in German and certain other universities) a private teacher or lecturer recognized by the university but receiving no compensation from it, being remunerated by fees.
- privatdozent — (in German and certain other universities) a private teacher or lecturer recognized by the university but receiving no compensation from it, being remunerated by fees.
- proboscidate — having a proboscis.
- proboscidean — pertaining to or resembling a proboscis.
- prodigal son — a figure in a parable of Jesus (Luke 15:11–32); a wayward son who squanders his inheritance but returns home to find that his father forgives him.
- productional — the act of producing; creation; manufacture.
- profile drag — the sum of the surface friction drag and the form drag for a body moving subsonically through a fluid
- progradation — seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
- prolog-linda — 1. Prolog extended with Linda-style parallelism. Proc 4th Australian Conf on Artif Intell. 2. Neil MacDonald, U Edinburgh 1989. Another Prolog extended with Linda, implemented on a Computing Surface.
- promuscidate — shaped like a proboscis
- proofreading — correction of text
- propaedeutic — pertaining to or of the nature of preliminary instruction.
- propagandism — the art, system, or use of propaganda
- propagandist — a person involved in producing or spreading propaganda.
- propagandize — to propagate or publicize (principles, dogma, etc.) by means of propaganda.
- propanedioic — malonic.
- prosodically — in a prosodic manner
- providential — of, relating to, or resulting from divine providence: providential care.
- prudentially — of, pertaining to, characterized by, or resulting from prudence.
- prussic acid — weakly acidic extremely poisonous aqueous solution of hydrogen cyanide
- 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.
- pteridomania — an excessive enthusiasm for ferns
- pteroic acid — a crystalline acid found in spinach
- punditocracy — influential media pundits collectively.
- pyramid peak — a mountain in W central Colorado, in the Elk Range, in the S Rocky Mountains. 14,018 feet (4276 meters).
- pyramidology — a belief system based on the supposed occult significance of the Egyptian pyramids
- pyrazinamide — a substance, C 5 H 5 N 3 O, used in the treatment of tuberculosis.
- pyridoxamine — a metabolic form of pyridoxine
- pyritohedral — of or relating to a pyritohedron
- pyruvic acid — a water-soluble liquid, C 3 H 4 O 3 , important in many metabolic and fermentative processes, having an odor resembling that of acetic acid, prepared by the dehydration of tartaric acid: used chiefly in biochemical research.
- quadragesima — the first Sunday in Lent.
- quadraphonic — of, noting, or pertaining to the recording and reproduction of sound over four separate transmission or direct reproduction channels instead of the customary two of the stereo system: a quadraphonic recording.
- quadraplegic — quadriplegic.
- quadriennial — quadrennial.
- quadriennium — quadrennium.
- quadrillions — Plural form of quadrillion.
- quadrinomial — consisting of four terms.
- quadriphonic — quadraphonic.
- quadriplegia — paralysis of all four limbs or of the entire body below the neck.
- quadriplegic — a person with quadriplegia.
- quadrisected — Simple past tense and past participle of quadrisect.
- quadrisonics — quadraphony.
- quadrivalent — having a valence of four; tetravalent.
- quadrominium — a building consisting of four individually owned apartments or living units.
- quadrophonic — Alternative spelling of quadraphonic.
- quai d'orsay — the quay along the south bank of the Seine in Paris, on which are located the Ministry of Foreign Affairs and other French government offices.
- quinacridone — Any of a group of synthetic organic compounds whose molecules contain three benzene and two pyridine rings arranged alternately. They include a number of red to violet pigments.
- race suicide — the extinction of a racial or ethnic population that tends to result when, through the unwillingness or forbearance of its members to have children, the birthrate falls below the death rate.
- racemic acid — an isomeric modification of tartaric acid that is sometimes found in the juice of grapes in conjunction with the common dextrorotatory form and is optically inactive but can be separated into the two usual isomeric forms, dextrorotatory and levorotatory.
- radar picket — a ship, vehicle, or aircraft stationed at a distance from a protected force to increase radar detection range.