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18-letter words containing h, i, s, p

  • spanish succession — War of thea war (1701-14) between European powers disputing the succession to the Spanish throne
  • specialist teacher — a teacher with expertise in working with children with special educational needs, such as dyslexia
  • spectroheliography — the process of obtaining an image of the sun in light of a particular wavelength, such as calcium or hydrogen, showing the distribution of the element over the surface and in the solar atmosphere, using a spectroheliograph
  • speech recognition — Computers. the computerized analysis of spoken words in order to identify the speaker, as in security systems, or to respond to voiced commands: the analysis is performed by finding patterns in the spectrum of the incoming sound and comparing them with stored patterns of elements of sound, as phones, or of complete words.
  • speech synthesizer — device that imitates human voice
  • spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
  • spherical triangle — a triangle formed by arcs of great circles of a sphere.
  • spike-tooth harrow — a harrow equipped with straight teeth on horizontal bars, usually employed to smooth and level plowed soil or seedbeds for planting or sowing.
  • spinal anaesthesia — anaesthesia of the lower half of the body produced by injecting an anaesthetic beneath the arachnoid membrane surrounding the spinal cord
  • stratigraphic trap — A stratigraphic trap is a rock formation that contains hydrocarbons and is sealed by other rock formations.
  • super middleweight — a boxer weighing up to 168 pounds (75.6 kg), between middleweight and light heavyweight.
  • superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
  • supportive therapy — any treatment, such as the intravenous administration of certain fluids, designed to reinforce or sustain the physiological well-being of a patient
  • sympathetic strike — sympathy strike.
  • sympathetic string — a thin wire string, as in various obsolete musical instruments, designed to vibrate sympathetically with the bowed or plucked strings to reinforce the sound.
  • systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
  • talk between ships — TBS (def 1).
  • telephone sex line — a telephone line operated by a phone-sex worker that offers phone sex to paying customers
  • the baptist church — any of various Protestant churches that believe in the baptism of believers
  • the bottomless pit — the underworld; hell
  • the encyclopedists — the writers of the French Encyclopedia (1751-72) edited by Diderot and d'Alembert, which contained the advanced ideas of the period
  • the middle passage — the journey across the Atlantic Ocean from the W coast of Africa to the Caribbean: the longest part of the journey of the slave ships sailing to the Caribbean or the Americas
  • the practicalities — the real facts or details of a situation, as opposed to its theoretical aspects
  • thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
  • threatened species — a species likely, in the near future, to become an endangered species within all or much of its range.
  • thrills and spills — If you refer to thrills and spills, you are referring to an experience which is exciting and full of surprises.
  • to lick into shape — If you lick, knock, or whip someone or something into shape, you use whatever methods are necessary to change or improve them so that they are in the condition that you want them to be in.
  • to pick and choose — If you pick and choose, you carefully choose only things that you really want and reject the others.
  • to spill the beans — If you spill the beans, you tell someone something that people have been trying to keep secret.
  • to stop at nothing — If you say that someone will stop at nothing to get something, you are emphasizing that they are willing to do things that are extreme, wrong, or dangerous in order to get it.
  • triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
  • warehouse capacity — the amount of storage space in a warehouse
  • welland ship canal — a ship canal in S Canada, in Ontario, connecting Lakes Erie and Ontario: 8 locks. 25 miles (40 km) long.
  • wernicke's aphasia — a type of aphasia caused by a lesion in Wernicke's area of the brain and characterized by grammatical but more or less meaningless speech and an apparent inability to comprehend speech.
  • western hemisphere — the western part of the terrestrial globe, including North and South America, their islands, and the surrounding waters.
  • whispering gallery — a space or gallery beneath a dome or broad arch in which low sounds produced at any of certain points are clearly audible at certain other distant points.
  • white iron pyrites — marcasite
  • white-spotted hyla — a type of tree frog (H. leucophyllata) of tropical America
  • wilson's phalarope — a phalarope, Phalaropus tricolor, that breeds in the prairie regions of North America and winters in Argentina and Chile.
  • wireless telephone — Now Rare. radiotelephony.
  • wireless telephony — Now Rare. radiotelephony.
  • withdrawal symptom — effects of stopping a drug
  • working hypothesis — See under hypothesis (def 1).
  • world championship — an international competition in a particular sport or activity for people all around the world
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