15-letter words containing a, r, t, h, u
- phenylketonuria — an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
- phonautographic — relating to a phonautograph or a piece of equipment that records sound visually by detecting the sound waves and indicating them on a graph
- phosphate group — the group or radical obtained by removal of one or more hydrogen atoms from phosphoric acid.
- photofluorogram — a recording on photographic film of images produced by a fluoroscopic examination.
- photojournalism — journalism in which photography dominates written copy, as in certain magazines.
- pinochet ugarte — Augusto [ou-goos-taw] /aʊˈgus tɔ/ (Show IPA), 1915–2006, Chilean army general and political leader: president 1973–90.
- pithecanthropus — a former genus of extinct hominids whose members have now been assigned to the proposed species Homo erectus.
- planter's punch — a punch made with rum, lime juice, sugar, and water or soda.
- pneumatotherapy — the use of compressed or rarefied air in treating disease.
- protospatharius — (of the Byzantine empire) a high-ranking official in the imperial guard
- pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
- puerto ayacucho — a city in S Venezuela, on the Orinoco River.
- pulmobranchiate — possessing a pulmobranch
- quantity theory — a theory stating that the general price level varies directly with the quantity of money in circulation and the velocity with which it is circulated, and inversely with the volume of production expressed by the total number of money transactions
- quasihistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- radioautography — autoradiography.
- reauthorization — the act or process of reauthorizing something
- rhesus negative — relating to blood not containing Rhesus antigen D
- rheumatic fever — a serious disease, associated with streptococcal infections, usually affecting children, characterized by fever, swelling and pain in the joints, sore throat, and cardiac involvement.
- rheumatism-root — spotted wintergreen.
- right of asylum — the right of alien fugitives to protection or nonextradition in a country or its embassy.
- right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
- rightabout-face — a turning directly about so as to face in the opposite direction
- rocket launcher — a tube attached to a weapon for the launching of rockets.
- rough breathing — the symbol (ʿ) used in the writing of Greek to indicate aspiration of the initial vowel or of the ρ (rho) over which it is placed.
- round character — a character in fiction whose personality, background, motives, and other features are fully delineated by the author.
- ruffle feathers — to cause upset or offence
- run the gantlet — to be punished by means of the gantlet
- russian thistle — a saltwort, Salsola kali tenuifolia, that has narrow, spinelike leaves, a troublesome weed in the central and western U.S.
- rutherford atom — the atom postulated as analogous to the solar system, with electrons revolving around a small, central, positive nucleus that constitutes practically the entire mass of the atom
- sarcenchymatous — relating to the connective tissue of some sponges
- scatter cushion — Scatter cushions are small cushions for use on sofas and chairs.
- schola cantorum — an ecclesiastical choir or choir school.
- security thread — a colored thread running through the paper of a piece of paper money, used to deter counterfeiting.
- security threat — a threat to the security of a country
- self-authorized — given or endowed with authority: an authorized agent.
- serum hepatitis — hepatitis B.
- shutter release — a button or similar device used to actuate a camera shutter.
- sir arthur john — Sir (Arthur) John, 1904–2000, English actor and director.
- 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.
- south australia — a state in S Australia. 380,070 sq. mi. (984,380 sq. km). Capital: Adelaide.
- south glamorgan — a county in SE Wales. 161 sq. mi. (416 sq. km).
- southeastwardly — toward the southeast
- southern paiute — See under Paiute (def 2).
- southwestwardly — toward the southwest
- staggered hours — a system of working in which the employees of an organization do not all arrive and leave at the same time, but have large periods of overlap
- stay the course — to spend some time in a place, in a situation, with a person or group, etc.: He stayed in the army for ten years.
- stirrup leather — the strap that holds the stirrup of a saddle.
- strawberry bush — an E North American shrub or small tree, Euonymus americanus, having pendulous capsules that split when ripe to reveal scarlet seeds: family Celastraceae
- student teacher — a student who is studying to be a teacher and who, as part of the training, observes classroom instruction or does closely supervised teaching in an elementary or secondary school.