17-letter words containing r, h, i
- organic chemistry — the branch of chemistry, originally limited to substances found only in living organisms, dealing with the compounds of carbon.
- organic psychosis — a severe mental illness produced by damage to the brain, as a result of poisoning, alcoholism, disease, etc
- orifice discharge — Orifice discharge is a model for calculating how quickly a fluid will come out of a punctured vessel or pipe.
- ortho-nitrophenol — any compound derived from phenol by the replacement of one or more of its ring hydrogen atoms by the nitro group.
- orthogonal matrix — a matrix that is the inverse of its transpose so that any two rows or any two columns are orthogonal vectors
- orthogonalization — (mathematics) The process of converting a set of functions or vectors into orthogonal ones.
- orthovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts. Formula: H3VO4
- other fish to fry — any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
- out of this world — the earth or globe, considered as a planet.
- overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
- overnight success — sth or sb suddenly popular
- pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
- pair annihilation — Physics. annihilation (def 3a).
- paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
- paleobiogeography — the study of the distribution of ancient plants and animals and their relation to ancient geographic features.
- parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
- parathyroidectomy — the excision of a parathyroid gland.
- paratyphoid fever — Also called paratyphoid fever. an infectious disease, similar in some of its symptoms to typhoid fever but usually milder, caused by any of several bacilli of the genus Salmonella other than S. typhi.
- partially sighted — unable to see properly so that even with corrective aids normal activities are prevented or seriously hindered
- past life therapy — a form of hypnosis or meditation based on the belief that an individual's present problems are rooted in events that occurred before birth in this life
- pathological liar — a person who tells lies frequently, with no rational motive for doing so.
- patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
- pecorino (cheese) — an Italian cheese made of sheep's milk; specif., such a cheese that is dry, sharp, and very hard
- peripheral device — peripheral
- peripheral vision — all that is visible to the eye outside the central area of focus; side vision.
- perpetual spinach — a variety of spinach that keeps producing edible leaves
- personality clash — friction between two people who have different personalities or points of view
- perth and kinross — a council area of N central Scotland, corresponding mainly to the historical counties of Perthshire and Kinross-shire: part of Tayside Region from 1975 until 1996: chiefly mountainous, with agriculture, tourism, and forestry. Administrative centre: Perth. Pop: 135 990 (2003 est). Area: 5321 sq km (2019 sq miles)
- pharmacologically — the science dealing with the preparation, uses, and especially the effects of drugs.
- phenylformic acid — benzoic acid.
- philanthropically — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
- philosopher kings — the Platonic ideal of a ruler, philosophically trained and enlightened.
- phonological rule — an operation in generative phonology that substitutes one sound or class of sounds for another in a phonological derivation.
- photo opportunity — a brief period set aside for the media to take photographs of a high government official or celebrity, usually immediately before or after a newsworthy event.
- photo-respiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
- photoreactivation — a process that repairs DNA damaged by ultraviolet light using an enzyme that requires visible light.
- phototherapeutics — the branch of therapeutics that deals with the curative use of light rays.
- physical exercise — movements and activities done to keep your body healthy or make it stronger
- physical training — fitness coaching
- pincushion flower — scabious2 (def 1).
- pitching rotation — the regular, scheduled succession of starting pitchers designated by a manager: a four-man pitching rotation in September.
- plains of abraham — a high plain adjoining the city of Quebec, Canada: battlefield where the English under Wolfe defeated the French under Montcalm in 1759.
- platinic chloride — chloroplatinic acid.
- point of purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- point-of-purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- police helicopter — a helicopter used in police operations, for example in traffic control, or for observation
- polystyrene chips — small pieces of polystyrene used for insulating or packing
- pre-authorization — the act of authorizing.
- pre-enlightenment — the act of enlightening.
- pre-technological — of or relating to technology; relating to science and industry.