18-letter words containing o, n, h

thermionic current — an electric current produced by the flow of thermions.
thermogalvanometer — a thermoammeter for measuring small currents, consisting of a thermocouple connected to a direct-current galvanometer.
thermoluminescence — phosphorescence produced by the heating of a substance.
thermonuclear bomb — hydrogen bomb.
thin on the ground — If people or things of a particular kind are thin on the ground, there are very few of them.
think the world of — the earth or globe, considered as a planet.
thioantimonic acid — a hypothetical acid, H3SbS4, known only in the form of its salts
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
thirty-second note — a note having 1/32 of the time value of a whole note; demi-semiquaver.
thirty-second rest — a rest equal in value to a thirty-second note.
thomas alva edison — Thomas Alva [al-vuh] /ˈæl və/ (Show IPA), 1847–1931, U.S. inventor, especially of electrical devices.
thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
thought experiment — Physics. a demonstration or calculation that is based on the postulates of a theory, as relativity, and that demonstrates or clarifies the consequences of the postulates.
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
thrift-institution — economical management; economy; frugality.
throw in the towel — an absorbent cloth or paper for wiping and drying something wet, as one for the hands, face, or body after washing or bathing.
throw oneself into — to propel or cast in any way, especially to project or propel from the hand by a sudden forward motion or straightening of the arm and wrist: to throw a ball.
tighten one's belt — a band of flexible material, as leather or cord, for encircling the waist.
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 be on the rocks — if something such as a marriage or a business is on the rocks, it is experiencing very severe difficulties and looks likely to end very soon
to come unstitched — to go wrong or awry
to find fault with — If you find fault with something or someone, you look for mistakes and complain about them.
to get wind of sth — If you get wind of something, you hear about it, especially when someone else did not want you to know about it.
to lay it on thick — If someone is laying it on thick or is laying it on, they are exaggerating a statement, experience, or emotion in order to try to impress people.
to learn the ropes — If you are learning the ropes, you are learning how a particular task or job is done.
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 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 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.
to take the plunge — If you take the plunge, you decide to do something that you consider difficult or risky.
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.
to twist the knife — If you twist the knife or if you turn the knife in someone's wound, you do or say something to make an unpleasant situation they are in even more unpleasant.
touch-in-goal line — either of the two touchlines at each end of the field between the goal line and the dead-ball line.
townsend avalanche — avalanche (def 3).
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 on one's heel — to turn around abruptly
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).
vermilion rockfish — a scarlet-red rockfish, Sebastes miniatus, inhabiting waters along the Pacific coast of North America, important as a food fish.
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.
wesleyan methodist — a member of any of the churches founded on the evangelical principles of John Wesley.
west-northwestward — moving, bearing, facing, or situated toward the west-northwest.

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