17-letter words containing o, r, t, h, d, n
- northern sporades — a group of Greek islands in the Aegean, lying northeast of Euboea
- northern studfish — See under studfish.
- nuclear threshold — the point in war at which a combatant brings nuclear weapons into use
- number three wood — spoon (def 5).
- old south arabian — a group of four closely related Semitic languages, having a writing system and used from about the eighth to the fifth centuries b.c. in the southern part of Arabia.
- old spanish trail — an overland route from Santa Fe, N. Mex., to Los Angeles, Calif., first marked out in 1776 by Spanish explorers and missionaries.
- on the barrelhead — upon being presented for sale; at the time of delivery
- on the other hand — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
- orthovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts. Formula: H3VO4
- overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
- parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
- 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)
- platinic chloride — chloroplatinic acid.
- prothoracic gland — either of a pair of endocrine glands in the anterior thorax of some insects, functioning to promote the series of molts from hatching to adulthood.
- quick on the draw — having fast reflexes
- radiation therapy — x-rays used as treatment
- radio in the loop — Wireless Local Loop
- rhode island bent — a European pasture grass, Agrostis tenuis, naturalized in North America, having red flower clusters.
- rhodope mountains — a mountain range in SE Europe, in the Balkan Peninsula extending along the border between Bulgaria and Greece. Highest peak: Golyam Perelik (Bulgaria), 2191 m (7188 ft)
- sheltered housing — accommodation designed esp for the elderly or infirm consisting of a group of individual premises, often with some shared facilities and a caretaker
- shetland pullover — a thick woollen sweater made from Shetland wool
- shorthold tenancy — letting of a dwelling for between one and five years at a fair rent
- sinbad the sailor — a merchant in The Arabian Nights who makes seven adventurous voyages
- south farmingdale — a town on central Long Island, in SE New York.
- south frigid zone — the part of the earth's surface between the Antarctic Circle and the South Pole.
- southern rhodesia — a former name (until 1964) of Zimbabwe (def 1).
- southern sporades — a group of Greek islands in the Aegean, including the Dodecanese, lying off the SW coast of Turkey
- southern studfish — See under studfish.
- stage-door johnny — a man who often goes to a theater or waits at a stage door to court an actress.
- stannous chloride — a white, crystalline, water-soluble solid, SnCl 2 ⋅2H 2 O, used chiefly as a reducing and tinning agent, and as a mordant in dyeing with cochineal.
- teacher education — training to become a teacher, usually at an institution of higher education
- the confederation — the original 13 states of the United States of America constituted under the Articles of Confederation and superseded by the more formal union established in 1789
- the penny dropped — If you say the penny dropped, you mean that someone suddenly understood or realized something.
- the underemployed — underemployed people
- theodore sturgeon — Theodore (Hamilton) 1918–85, U.S. science-fiction writer.
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- thermal radiation — electromagnetic radiation emitted by all matter above a temperature of absolute zero because of the thermal motion of atomic particles.
- third commandment — “Thou shalt not take the name of the Lord thy God in vain”: third of the Ten Commandments.
- thread escutcheon — a raised metal rim around a keyhole.
- three-dimensional — having, or seeming to have, the dimension of depth as well as width and height.
- to the bitter end — If you say that you will continue doing something to the bitter end, especially something difficult or unpleasant, you are emphasizing that you will continue doing it until it is completely finished.
- to the nth degree — If something is done to the nth degree, it is done to an extreme degree.
- try one's hand at — to attempt (to do something), esp. for the first time
- under the counter — (of merchandise) sold clandestinely.
- under the sign of — during that portion of the year when the sun is passing through and thus subject to the influence of (a specified sign of the zodiac)
- under-the-counter — (of merchandise) sold clandestinely.
- undulatory theory — wave theory (def 1).
- wheatstone bridge — a circuit for measuring an unknown resistance by comparing it with known resistances.
- wind chill factor — A wind chill factor is a measure of the cooling effect of the wind on the temperature of the air.
- wind-chill factor — the apparent temperature felt on the exposed human body owing to the combination of temperature and wind speed.