18-letter words containing r, t, h, o, n
- processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- projection machine — an apparatus that projects motion pictures; projector.
- prometheus unbound — a drama in verse (1820) by Shelley.
- protease inhibitor — a drug that inhibits the action of protease, especially any of a class of antiviral drugs that prevent the cleavage and replication of HIV proteins.
- proton synchrotron — a synchrotron used for accelerating protons.
- provision merchant — a person or company in the business of retailing food and other provisions
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- puerto rico trench — a depression in the ocean floor, N of Puerto Rico: includes deepest part of Atlantic Ocean, 28,374 feet (8648 meters).
- puss in the corner — a parlor game for children in which one player in the middle of a room tries to occupy any of the positions along the walls that become vacant as other players dash across to exchange places at a signal.
- put one's shirt on — to bet all one has on (a horse, etc)
- put the mockers on — stop, thwart
- quite the contrary — not at all, the very opposite
- random walk theory — the theory that the future movement of share prices does not reflect past movements and therefore will not follow a discernible pattern
- reach for the moon — to desire or attempt something unattainable or difficult to obtain
- recharacterization — portrayal; description: the actor's characterization of a politician.
- residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
- return to the fold — come back home
- reverse angle shot — Movies. reverse shot.
- rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
- rhondda cynon taff — a county borough in S Wales, created from part of Mid Glamorgan in 1996. Pop: 231 600 (2003 est). Area: 558 sq km (215 sq miles)
- rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
- roman architecture — buildings in style of ancient Rome
- root canal therapy — endodontics.
- rotary clothesline — an apparatus of radiating spokes that support lines on which clothes are hung to dry
- rotten to the core — person: wicked
- rubbish collection — the collection of domestic refuse for disposal
- runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
- saint john's bread — carob (def 2).
- school of motoring — a centre where people pay for lessons to learn to drive
- scottish deerhound — one of a Scottish breed of large, tall hunting dogs having a medium-length, wiry, gray or reddish-fawn coat, originally developed for hunting and bringing down deer, and known as the royal dog of Scotland.
- scratch one's head — If you say that someone is scratching their head, you mean that they are thinking hard and trying to solve a problem or puzzle.
- scruff of the neck — If someone takes you by the scruff of the neck, they take hold of the back of your neck or collar suddenly and roughly.
- search-and-destroy — designed to find and destroy by bombing etc
- sell oneself short — If you sell someone short, you do not point out their good qualities as much as you should or do as much for them as you should.
- set one's heart on — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
- shift one's ground — to change one's argument or defense
- shipping container — a large, strong container, usually of metal, used to store goods in during shipment
- shorthand notebook — a notebook used by a shorthand writer
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- shugart technology — Seagate Technology
- shunting operation — an operation in which rail coaches are manoeuvred
- sindbad the sailor — (in The Arabian Nights' Entertainments), a wealthy citizen of Baghdad who relates the adventures of his seven wonderful voyages.
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- something or other — sth not remembered precisely
- something to spare — a surplus of something
- song without words — a song which only consists of a tune or melody and does not have any lyrics
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- sound and the fury — a novel (1929) by William Faulkner.
- sound spectrograph — an electronic device for recording a sound spectogram.