16-letter words containing a, h, i, r
- photorespiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
- photozincography — a type of photoengraving using a sensitized zinc plate.
- physical address — (memory management) The address presented to a computer's main memory in a virtual memory system, in contrast to the virtual address which is the address generated by the CPU. A memory management unit translates virtual addresses into physical addresses.
- physical therapy — the treatment or management of physical disability, malfunction, or pain by exercise, massage, hydrotherapy, etc., without the use of medicines, surgery, or radiation.
- phytoremediation — a process of decontaminating soil or water by using plants and trees to absorb or break down pollutants.
- pinot chardonnay — Chardonnay.
- pithecanthropine — of, belonging to, or resembling a former genus (Pithecanthropus, now classified as Homo erectus) of extinct early humans, who lived in Java, China, Europe, and Africa
- pithecanthropoid — of, relating to, or resembling the former genus Pithecanthropus or one of its members.
- place of worship — religious house: church, temple
- plutarch's lives — (Parallel Lives) a collection (a.d. 105–15) by Plutarch of short biographies of the leading political figures of ancient Greece and Rome.
- pneumatic trough — a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.
- poitou-charentes — a region of W central France, on the Bay of Biscay: mainly low-lying
- poor white trash — white trash.
- pork scratchings — small pieces of crisply cooked pork crackling, eaten cold as an appetizer with drinks
- port authorities — the body with overall responsibility for a port
- port phillip bay — a bay in SE Australia: the harbor of Melbourne. 31 miles (50 km) long; 25 miles (40 km) wide.
- practice teacher — student teacher
- pragmatic theory — the theory of truth that the truth of a statement consists in its practical consequences, especially in its agreement with subsequent experience.
- prairie schooner — a type of covered wagon, similar to but smaller than the Conestoga wagon, used by pioneers in crossing the prairies and plains of North America.
- price leadership — the setting of the price of a product or service by a dominant firm at a level that competitors can match, in order to avoid a price war
- primary syphilis — the first stage of syphilis, characterized by the formation of a chancre at the site of infection.
- prince's feather — a tall, showy plant, Amaranthus hybridus erythrostachys, of the amaranth family, having reddish foliage and thick spikes of small, red flowers.
- prince's-feather — a tall, showy plant, Amaranthus hybridus erythrostachys, of the amaranth family, having reddish foliage and thick spikes of small, red flowers.
- prognostic chart — a chart showing the predicted state of the atmosphere for a given time in the future.
- prophylactically — defending or protecting from disease or infection, as a drug.
- propylthiouracil — a white crystalline compound, C 7 H 1 0 N 2 OS, that interferes with the synthesis of thyroid hormone by the thyroid gland: used in the treatment of hyperthyroidism.
- protestant ethic — work ethic.
- pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- psychogeriatrics — the psychology of old age.
- purchasing agent — a person who buys materials, supplies, equipment, etc., for a company.
- purchasing power — Also called buying power. the ability to purchase goods and services.
- pyramidal orchid — a chalk-loving orchid, Anacamptis pyramidalis, bearing a dense cone-shaped spike of purplish-pink flowers with a long curved spur
- pyruvic aldehyde — a yellow, liquid compound, C 3 H 4 O 2 , containing both an aldehyde and a ketone group, usually obtained in a polymeric form: used chiefly in organic synthesis.
- quasi-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- radio microphone — a microphone incorporating a radio transmitter so that the user can move around freely
- radio-phonograph — a radio and phonograph combined in one unit and sharing some components, as the amplifier and speaker(s)
- radiographically — the production of radiographs.
- rainbow seaperch — an embiotocid fish, Hypsurus caryi, living off the Pacific coast of North America, having red, orange, and blue stripes on the body.
- raise the stakes — to increase the amount of money or valuables hazarded in a gambling game
- ranikhet disease — Newcastle disease.
- rational horizon — the line or circle that forms the apparent boundary between earth and sky.
- re-establishment — the act or an instance of establishing.
- reaction chamber — the chamber in a rocket engine in which the reaction or combustion of fuel occurs
- rear-wheel drive — a layout in motor vehicles which places the engine at the front and the driven wheels at the rear
- redbank whiteoak — a city in S Tennessee.
- registered share — a stock registered to the owner's name
- research library — a general or specialized library that collects materials for use in intensive research projects.
- residential home — a home with social-work supervision for people who need more than just housing accommodation, such as esp the elderly, and also children in care or mentally handicapped adults
- rhine palatinate — See under Palatinate (def 1).
- rhinolaryngology — the branch of medicine dealing with diseases of the nose and larynx