18-letter words containing o, r, t, h, d, i
- hemorrhoidectomies — Plural form of hemorrhoidectomy.
- hermaphrodite brig — a two-masted sailing vessel, square-rigged on the foremast and fore-and-aft-rigged on the mainmast.
- heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
- heteroskedasticity — Alternative spelling of heteroscedasticity.
- hold a reservation — If a hotel holds a reservation, it keeps a room for someone, and does not give it to someone else.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- hot-water cylinder — a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
- hydroflumethiazide — A diuretic drug.
- hydroxyacetic acid — glycolic acid.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypoparathyroidism — Diminished concentration of parathyroid hormone in the blood, which causes deficiencies of calcium and phosphorus compounds in the blood and results in muscular spasms.
- in accordance with — conforming to
- in the mood for/to — If you say that you are in the mood for something, you mean that you want to do it or have it. If you say that you are in no mood to do something, you mean that you do not want to do it or have it.
- indecent behaviour — the offence of committing indecent acts
- knight of the road — a tramp
- lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
- logarithmus dualis — (mathematics) (ld) Latin for logarithm base two. More commonly written as "log" with a subscript "2". Roughly the number of bits required to represent an integer.
- long hundredweight — a hundredweight of 112 pounds (50.8 kg), the usual hundredweight in Great Britain, but now rare in the U.S.
- lord chief justice — the presiding judge of Britain's High Court of Justice, the superior court of record for both criminal and civil cases.
- loschmidt's number — the number of molecules in one cubic centimeter of an ideal gas at standard temperature and pressure, equal to 2.687 × 10 19.
- methylene chloride — a colorless, volatile liquid, CH 2 Cl 2 , used chiefly as a solvent, as a refrigerant, and as a local anesthetic in dentistry.
- methylprednisolone — A synthetic glucocorticoid drug, with chemical formula C22H30O5.
- microsloth windows — (abuse, operating system) /mi:'kroh-sloth" win"dohz/ (Or "Windoze", /win'dohz/) A derogatory term for Microsoft Windows which is so limited by bug-for-bug compatibility with mess-dos that it is agonisingly slow on anything less than a fast 486. Also called just "Windoze", with the implication that you can fall asleep waiting for it to do anything; the latter term is extremely common on Usenet. Compare X, sun-stools.
- middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
- modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
- morphine addiction — the fact or condition of being addicted to morphine
- neighborhood watch — a neighborhood surveillance program or group in which residents keep watch over one another's houses, patrol the streets, etc., in an attempt to prevent crime.
- north bedfordshire — a city in Bedfordshire, in central England.
- northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
- officer of the day — an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.
- old curiosity shop — a novel (1840–41) by Dickens.
- on the credit side — You say on the credit side in order to introduce one or more good things about a situation or person, usually when you have already mentioned the bad things about them.
- on the danger list — critically ill in hospital
- orthopedic surgery — corrective operation on bones or joints
- orthophthalic acid — Chemistry. any of three isomeric acids having the formula C 8 H 6 O 4 , especially the ortho isomer (orthophthalic acid) a colorless, crystalline, slightly water-soluble solid used chiefly in the manufacture of dyes, medicine, and perfume.
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- over and done with — If you say that something is over and done with, you mean that it is completely finished and you do not have to think about it any more.
- paint the town red — a substance composed of solid coloring matter suspended in a liquid medium and applied as a protective or decorative coating to various surfaces, or to canvas or other materials in producing a work of art.
- parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
- phantom withdrawal — the unauthorized removal of funds from a bank account using an automated teller machine
- phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
- pitch-and-run shot — chip shot.
- positively charged — having a positive charge
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
- rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
- rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
- rub shoulders with — to mix with socially or associate with