12-letter words containing i, n, d, a, r
- 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.
- proofreading — correction of text
- 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.
- providential — of, relating to, or resulting from divine providence: providential care.
- prudentially — of, pertaining to, characterized by, or resulting from prudence.
- pteridomania — an excessive enthusiasm for ferns
- punditocracy — influential media pundits collectively.
- pyrazinamide — a substance, C 5 H 5 N 3 O, used in the treatment of tuberculosis.
- pyridoxamine — a metabolic form of pyridoxine
- 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.
- quadriennial — quadrennial.
- quadriennium — quadrennium.
- quadrillions — Plural form of quadrillion.
- quadrinomial — consisting of four terms.
- quadriphonic — quadraphonic.
- 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.
- 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.
- radiant flux — the time rate of flow of radiant energy.
- radiant heat — heat energy transmitted by electromagnetic waves in contrast to heat transmitted by conduction or convection.
- radiata pine — a pine tree, Pinus radiata, native to the western USA. but grown in Australia, New Zealand, and elsewhere to produce building timber
- radical sign — the symbol √ or indicating extraction of a root of the quantity that follows it, as √25=5 or .
- radio beacon — a radio station that sends a characteristic signal so as to enable ships or airplanes to determine their position or bearing by means of a radio compass.
- radio window — the range of wavelengths at which the earth's atmosphere is transparent to radio waves.
- radio-carbon — Also called carbon 14. a radioactive isotope of carbon with mass number 14 and a half-life of about 5730 years: widely used in the dating of organic materials.
- radioelement — a radioactive element.
- radiolucency — almost entirely transparent to radiation; almost entirely invisible in x-ray photographs and under fluoroscopy.
- radionuclide — a radioactive nuclide.
- radiophonist — a person who produces radiophonic music
- ragged robin — a plant, Lychnis flos-cuculi, of the pink family, having pink or white flowers with dissected petals.
- railroad pen — a ruling pen for drawing two parallel lines.
- rainbow bird — an Australian bee-eater, Merops ornatus, with brightly coloured plumage. It feeds in flight and nests in sandy burrows
- raisin bread — dough baked with dried grapes
- range finder — any of various instruments for determining the distance from the observer to a particular object, as for sighting a gun or adjusting the focus of a camera.
- rangefinding — the act or process of determining the distance of an object from the observer
- rat-infested — (of a place or vessel) that has many rats
- rating badge — a badge that indicates the rank and specialty of a petty officer: worn on the upper left sleeve.
- raven-haired — with glossy deep black hair
- re-admission — the act of allowing to enter; entrance granted by permission, by provision or existence of pecuniary means, or by the removal of obstacles: the admission of aliens into a country.
- reacquainted — to make more or less familiar, aware, or conversant (usually followed by with): to acquaint the mayor with our plan.
- readaptation — the act of adapting.
- reading book — a book for people who are learning to read, to help them become accustomed to looking at and understanding written words
- reading desk — a desk for use in reading, especially by a person standing.
- reading lamp — A reading lamp is a small lamp that you keep on a desk or table. You can move part of it in order to direct the light to where you need it for reading.