18-letter words containing e, n, t, h, r
- the nether regions — the genitals
- the north atlantic — the northern part of the Atlantic Ocean, especially the waters separating North America and Europe
- the northern irish — the people who live in or come from Northern Ireland
- the northern karoo — a high arid plateau in South Africa, north of the Central Karoo
- the passenger seat — the seat used by a passenger of a car, beside the driver
- the stars and bars — the flag of the Confederate States of America
- the sun also rises — a novel (1926) by Ernest Hemingway.
- the three wise men — the wise men from the east who came to do homage to the infant Jesus
- the uncircumcision — the gentiles
- 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.
- there's no telling — You use there's no telling to introduce a statement when you want to say that it is impossible to know what will happen in a situation.
- thermal efficiency — the ratio of the work output of a heat engine to the heat input expressed in the same units of energy.
- 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.
- thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
- third man argument — (in the philosophy of Aristotle) the argument against the existence of Platonic Forms that since the Form of Man is itself a perfect man, a further form (the "third" man) would be required to explain this, and so ad infinitum
- 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.
- 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.
- threatened species — a species likely, in the near future, to become an endangered species within all or much of its range.
- 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
- three-day eventing — participation in a three day equestrian competition consisting of dressage, cross-country jumping, and stadium jumping
- 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.
- 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 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.
- triarylmethane dye — any of the class of dyes containing three aryl groups attached to a central carbon atom: used chiefly for dyeing cotton, wool, and silk.
- 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.
- university heights — a city in NE Ohio, near Cleveland.
- 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.
- western hemisphere — the western part of the terrestrial globe, including North and South America, their islands, and the surrounding waters.
- westinghouse brake — a railroad air brake operated by compressed air.
- white iron pyrites — marcasite