15-letter words containing r, a, t, o, u
- heterodactylous — having the first and fourth toes directed backward, and the second and third forward, as in trogons.
- heterosexualism — Discrimination of non-heterosexual people on the basis of their sexual orientation.
- heterosexuality — sexual feeling or behavior directed toward a person or persons of the opposite sex.
- horatius cocles — a legendary Roman hero of the 6th century bc, who defended a bridge over the Tiber against Lars Porsena
- horse latitudes — the latitudes near 30°N or 30°S at sea, characterized by baffling winds, calms, and high barometric pressure
- horticulturally — With respect to horticulture.
- hour after hour — continuously for many hours
- human relations — the study of group behavior for the purpose of improving interpersonal relationships, as among employees.
- humphrey bogart — Humphrey (DeForest) ("Bogie"or"Bogey") 1899–57, U.S. motion-picture actor.
- hunting leopard — the cheetah.
- huntington park — a city in SW California, near Los Angeles.
- hydraulic motor — a motor that converts the kinetic or potential energy of a fluid into mechanical energy.
- hydrofracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
- hydrometallurgy — the technique or process of extracting metals at ordinary temperatures by leaching ore with liquid solvents.
- hydroxybutyrate — (chemistry) any salt or ester of hydroxybutyric acid, but especially of gamma-hydroxybutyric acid.
- hyperfastidious — extremely or excessively fastidious
- hyperfunctional — of or relating to a function or functions: functional difficulties in the administration.
- hypopituitarism — abnormally diminished activity of the pituitary gland, especially of the anterior lobe.
- immunoadsorbent — immunosorbent.
- immunomodulator — a substance that affects the functioning of the immune system
- immunoreactions — Plural form of immunoreaction.
- importunateness — Quality of being importunate.
- indirect labour — work done in administration and sales rather than in the manufacturing of a product
- inertial fusion — a type of nuclear fusion in which the inertia of matter enables it to fuse by impact, as by pulses of laser radiation or high-energy charged particles, rather than by high temperature
- inquisitorially — In an inquisitorial manner.
- instrumentation — the arranging of music for instruments, especially for an orchestra.
- insubordinately — In an insubordinate manner.
- insubordination — the quality or condition of being insubordinate, or of being disobedient to authority; defiance: The employee was fired for insubordination.
- insurrectionary — of, relating to, or of the nature of insurrection.
- interfoliaceous — situated between leaves, especially opposite leaves.
- interjaculatory — expressed by interjaculating
- intermodulation — the production in an electrical device of frequencies that are the sums or differences of frequencies of different inputs or of their harmonics.
- interpopulation — Between populations.
- intrapopulation — occurring within a population or between members of a population
- involuntariness — The state of being involuntary; unwillingness; automatism.
- iridocapsulitis — inflammation of the iris and the capsule of the lens.
- jerusalem thorn — See under Christ's-thorn.
- john of austria — ("Don John") 1547?–78, Spanish naval commander and general: victor at the battle of Lepanto.
- joint favourite — one of two or more competitors in a race or contest that are considered equally likely to win
- judeo-christian — of or relating to the religious writings, beliefs, values, or traditions held in common by Judaism and Christianity.
- juice extractor — device: squeezes juice from fruit
- juxtaglomerular — (anatomy) Near, or adjoining a renal glomerulus.
- kreutzer sonata — a sonata for violin and piano (1803, Op. 47) by Ludwig van Beethoven.
- labour shortage — a shortage or insufficiency of qualified candidates for employment (in an economy, country, etc)
- lancaster sound — an arm of Baffin Bay, Nunavut Territory, Canada, leading W to the Parry Channel. 200 miles (320 km) long and 40 miles (64 km) wide.
- laptop computer — portable computer
- largemouth bass — a North American freshwater game fish, Micropterus salmoides, having an upper jaw extending behind the eye and a broad, dark, irregular stripe along each side of the body. Compare smallmouth bass.
- lateran council — any of the five ecumenical councils (1123, 1139, 1179, 1215, 1512–17) held in the Lateran Palace.
- lavatory humour — humour characterized by excessive mention of lavatories and the excretory functions; vulgar or scatological humour
- lean production — Lean production is the same as lean manufacturing.