15-letter words containing h, i, d, e, o, r
- orthopaedically — in an orthopaedic manner
- osteochondritis — inflammation of bone and cartilage.
- osteochondrosis — a disease of bone and cartilage growth centers in children that begins as a necrosis and is followed by regeneration or renewed calcification.
- oyster toadfish — See under toadfish (def 1).
- paedophile ring — a group of people who take part in illegal sexual activity involving children
- perchloric acid — a colorless, syrupy hygroscopic liquid, HClO 4 , an acid of chlorine containing one more oxygen atom than chloric acid: used chiefly as a reagent in analytical chemistry.
- phenazopyridine — a substance, C 1 1 H 1 2 ClN 5 , used as a lower urinary tract analgesic.
- polychlorinated — having multiple chlorine atoms
- posthole digger — a tool or device for digging a posthole.
- propionaldehyde — a colorless, water-soluble liquid, C 3 H 6 O, having a pungent odor: used chiefly in the manufacture of plastics.
- propylhexedrine — a colorless, adrenergic, water-soluble liquid, C 1 0 H 2 N, used by inhalation as a nasal decongestant.
- protonephridium — a tubular, excretory structure in certain invertebrates, as flatworms, rotifers, and some larvae, usually ending internally in flame cells and having an external pore
- pseudepigraphon — any book of the Pseudepigrapha
- pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
- pseudoephedrine — a dextrorotatory, isomeric compound, C 1 0 H 1 5 NO, used as a nasal decongestant.
- pseudonephritis — a condition, thought to be benign, in which microscopic amounts of blood and protein are present in the urine, occurring commonly among athletes after strenuous exercise.
- radio telephone — A radio telephone is a telephone which carries sound by sending radio signals rather than by using wires. Radio telephones are often used in cars.
- radio-telephone — a telephone in which sound or speech is transmitted by means of radio waves instead of through wires or cables.
- radiochemically — by radiochemical means or methods; from a radiochemical perspective
- radiotechnology — the technical application of any form of radiation to industry.
- radiotelegraphy — the constructing or operating of radiotelegraphs.
- red riding hood — fairytale character
- rhodesian front — the governing party in Zimbabwe (then called Rhodesia) 1962–78
- round the twist — mad; eccentric
- round whitefish — a whitefish, Prosopium cylindraceum, found in northern North America and Siberia, having silvery sides and a dark bronze back.
- rowland heights — a city in SW California, near Los Angeles.
- sandwich course — A sandwich course is an educational course in which you have periods of study between periods of being at work.
- schooner-rigged — rigged as a schooner, especially with gaff sails and staysails only.
- self-authorized — given or endowed with authority: an authorized agent.
- shadow minister — a member of the main opposition party in Parliament who would hold ministerial office if their party were in power
- shopping arcade — a place where a number of shops are connected together under one roof
- shortwave radio — a radio that transmits or receives shortwaves.
- shoulder girdle — pectoral girdle (def 2).
- silver chloride — a white, granular, water-insoluble powder, AgCl, that darkens on exposure to light, produced by the reaction of silver nitrate with a chloride: used chiefly in the manufacture of photographic emulsions and in the making of antiseptic silver preparations.
- socratic method — the use of questions, as employed by Socrates, to develop a latent idea, as in the mind of a pupil, or to elicit admissions, as from an opponent, tending to establish a proposition.
- sodium chlorate — a colorless, water-soluble solid, NaClO 3 , cool and salty to the taste, used chiefly in the manufacture of explosives and matches, as a textile mordant, and as an oxidizing and bleaching agent.
- sodium chloride — salt1 (def 1).
- soldier's heart — cardiac neurosis.
- speech disorder — an inability to produce normal speech
- sphaerosiderite — a type of siderite
- spheroidization — the conversion of grains into spheroids
- sulphur dioxide — a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs (E220), bleaching, and disinfecting. Formula: SO2
- summer holidays — the time when children do not go to school in the summer
- the cordilleras — the complex of mountain ranges on the W side of the Americas, extending from Alaska to Cape Horn and including the Andes and the Rocky Mountains
- the daily round — the usual activities of one's day
- the high ground — a position of moral or ethical superiority in a dispute
- the perigordian — the Perigordian culture
- thermodiffusion — thermal diffusion.
- thermoperiodism — the effect on an organism of rhythmic fluctuations in temperature.
- thiocarbanilide — a gray powder, C 13 H 12 N 2 S, used as an intermediate in dyes and as an accelerator in vulcanization.