12-letter words containing a, d, p, t, o, r
- pentacrinoid — a larval crinoid resembling members of the genus Pentacrinus
- pentahydroxy — (of a molecule) containing five hydroxyl groups.
- peroxidation — a type of reaction in which oxygen atoms are formed leading to the production of peroxides. It is stimulated in the body by certain toxins and infections
- petrodollars — Petrodollars are a unit of money used to calculate how much a country has earned by exporting petroleum or natural gas.
- petrozavodsk — a city in NW Russia, capital of the Karelian Autonomous Republic, on Lake Onega: developed around ironworks established by Peter the Great in 1703; university (1940). Pop: 265 000 (2005 est)
- photo spread — a picture spread. See under spread (def 33).
- pilot ladder — Jacob's ladder (def 2a).
- pirate radio — radio broadcasting illegally
- plasterboard — a material used for insulating or covering walls, or as a lath, consisting of paper-covered sheets of gypsum and felt.
- plat du jour — the special or featured dish of the day on a restaurant menu.
- platform bed — a bed, originating in Scandinavia in the 1930s, consisting of a simple shallow box for holding a mattress situated on a slightly recessed pedestal.
- point spread — a betting device, established by oddsmakers and used to attract bettors for uneven competitions, indicating the estimated number of points by which a stronger team can be expected to defeat a weaker team, the point spread being added to the weaker team's actual points in the game and this new figure then compared to the stronger team's points to determine winning bets.
- point-spread — a betting device, established by oddsmakers and used to attract bettors for uneven competitions, indicating the estimated number of points by which a stronger team can be expected to defeat a weaker team, the point spread being added to the weaker team's actual points in the game and this new figure then compared to the stronger team's points to determine winning bets.
- pointed arch — an arch having a pointed apex.
- port de bras — (used with a singular verb) the technique of moving the arms properly.
- postal order — money order.
- postcardlike — (of a scene) resembling a postcard
- postcardware — Shareware that borders on freeware, in that the author requests only that satisfied users send a postcard of their home town or something. (This practice, silly as it might seem, serves to remind users that they are otherwise getting something for nothing, and may also be psychologically related to real estate "sales" in which $1 changes hands just to keep the transaction from being a gift.)
- postdoctoral — of or relating to study or professional work undertaken after the receipt of a doctorate: postdoctoral courses.
- poster board — a thick, fairly stiff cardboard composed of layers of paper or paper pulp compressed together and typically used to support displays.
- postgraduate — of, pertaining to, characteristic of, or consisting of post-graduates: a postgraduate seminar.
- postmeridian — of or relating to the afternoon.
- postprandial — after a meal, especially after dinner: postprandial oratory; a postprandial brandy.
- pot marigold — calendula (def 1).
- preformatted — the shape and size of a book as determined by the number of times the original sheet has been folded to form the leaves. Compare duodecimo, folio (def 2), octavo, quarto.
- preponderant — superior in weight, force, influence, numbers, etc.; prevailing: a preponderant misconception.
- preponderate — to exceed something else in weight; be the heavier.
- prerogatived — possessing a prerogative
- preset board — a control board for setting up theatrical lighting switches and dimmer readings in advance so that during a performance the lights can be automatically operated for one or several scenes.
- 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.
- procathedral — a church used temporarily as a cathedral.
- process data — data processing
- product mark — a trademark used on only one product.
- productional — the act of producing; creation; manufacture.
- progradation — seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
- promuscidate — shaped like a proboscis
- propaedeutic — pertaining to or of the nature of preliminary instruction.
- propagandist — a person involved in producing or spreading propaganda.
- proudhearted — full of pride.
- providential — of, relating to, or resulting from divine providence: providential care.
- pseudomartyr — someone falsely or inaccurately called a martyr
- pteridomania — an excessive enthusiasm for ferns
- pteroic acid — a crystalline acid found in spinach
- punditocracy — influential media pundits collectively.
- pyritohedral — of or relating to a pyritohedron
- radiator cap — a cap in the opening of a device for cooling an internal-combustion engine, through which coolant liquid can be added
- radioisotope — a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.
- radiophonist — a person who produces radiophonic music