18-letter words containing h, o, n, r, a
- tetrachloromethane — carbon tetrachloride.
- the bird has flown — the person in question has fled or escaped
- the dark continent — a term for Africa when it was relatively unexplored
- the electronic age — the electronic age began when electronic equipment, including computers came into use
- the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
- the internationale — a revolutionary socialist hymn, first sung in 1871 in France
- the major rogation — April 25, observed by Christians as a day of solemn supplication for the harvest and marked by processions, special prayers, and blessing of the crops
- the north atlantic — the northern part of the Atlantic Ocean, especially the waters separating North America and Europe
- the northern karoo — a high arid plateau in South Africa, north of the Central Karoo
- the sun also rises — a novel (1926) by Ernest Hemingway.
- the-dark-continent — Africa: so called, especially during the 19th century, because little was known about it.
- there you go again — Phrases such as there you go again are used to show annoyance at someone who is repeating something that has annoyed you in the past.
- thermogalvanometer — a thermoammeter for measuring small currents, consisting of a thermocouple connected to a direct-current galvanometer.
- thermonuclear bomb — hydrogen bomb.
- thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
- thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
- three-cornered hat — a triangular shaped hat which was popular in the 17th and 18th centuries; its turned up brim formed a gutter for catching rain
- to a grinding halt — If you describe a bad situation as grinding, you mean it never gets better, changes, or ends.
- to be on the radar — to be noticed or important
- to learn the ropes — If you are learning the ropes, you are learning how a particular task or job is done.
- to open your heart — If you open your heart or pour out your heart to someone, you tell them your most private thoughts and feelings.
- to the manner born — a way of doing, being done, or happening; mode of action, occurrence, etc.: I don't like the manner in which he complained.
- transit theodolite — a theodolite having a telescope that can be transited.
- transmission shaft — a shaft that rotates transmitting motion from the engine to the differential gear
- turn one's hand to — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
- under one's breath — the air inhaled and exhaled in respiration.
- under the aegis of — guided or protected by
- under the jackboot — If a country or group of people is under the jackboot, they are suffering because the government is cruel and undemocratic.
- unification church — a religious sect that combines elements of Protestantism and Buddhism, founded by the Rev. Sun Myung Moon in 1954: many of its members live in communes sponsored by the sect.
- urban homesteading — homesteading (def 2).
- water of hydration — the portion of a hydrate that is represented as, or can be expelled as, water: now usually regarded as being in true molecular combination with the other atoms of the compound, and not existing in the compound as water.
- water on the brain — hydrocephalus.
- west-northwestward — moving, bearing, facing, or situated toward the west-northwest.
- westinghouse brake — a railroad air brake operated by compressed air.
- wheelchair housing — housing designed or adapted for a chairbound person
- white-faced hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
- wilson's phalarope — a phalarope, Phalaropus tricolor, that breeds in the prairie regions of North America and winters in Argentina and Chile.
- woman of the world — a woman experienced and sophisticated in the ways and manners of the world, especially the world of society.
- world championship — an international competition in a particular sport or activity for people all around the world
- writ of attachment — a document by which a court orders the seizing of property in order to ensure satisfaction of a judgement
- xenon hexafluoride — a colorless, crystalline compound, XeF 6 , that melts at 50°C to a yellow liquid, and boils at 75°C.