21-letter words containing c, h, r, o, m
- afro-american english — Black English (def 1).
- algorithm description — (language) (ALDES) ["The Algorithm Description Language ALDES", R.G.K. Loos, SIGSAM Bull 14(1):15-39 (Jan 1976)].
- american saddle horse — one of a breed of horses, raised originally in the U.S., that have high-stepping gaits and are bred to the three-gaited or five-gaited type.
- antihemophilic factor — a protein that is essential to normal blood clotting and is lacking or deficient in persons having hemophilia A. Abbreviation: AHF.
- apothecaries' measure — a system of liquid volume measure used in pharmacy in which 60 minims equal 1 fluid drachm, 8 fluid drachms equal 1 fluid ounce, and 20 fluid ounces equal 1 pint
- arithmetic logic unit — the part of a central processing unit that performs arithmetic and logical operations
- arithmetic/logic unit — ALU.
- astronomical twilight — the period of time during which the sun is 18° below the horizon
- atmospheric inversion — inversion (def 12).
- atmospheric-inversion — an act or instance of inverting.
- behavior modification — a technique that seeks to modify animal and human behavior through application of the principles of conditioning, in which rewards and reinforcements, or punishments, are used to establish desired habits, or patterns of behavior
- benzalkonium chloride — a white or yellowish-white, water-soluble mixture of ammonium chloride derivatives having the structure C 8 H 10 NRCl, where R is a mixture of radicals ranging from C 8 H 17 – to C 18 H 37 –, that occurs as an amorphous powder or in gelatinous lumps: used chiefly as an antiseptic and a disinfectant.
- benzethonium chloride — a colorless, water-soluble, crystalline solid, ammonium chloride derivative, (C 27 H 42 O 2 N)Cl⋅H 2 O, used chiefly as an antiseptic.
- bichloride of mercury — mercuric chloride
- black-headed fireworm — the larva of any of several moths, as Rhopobota naevana (black-headed fireworm) which feeds on the leaves of cranberries and causes them to wither.
- bottlebrush moustache — a short, bristly moustache
- british north america — (formerly) Canada or its constituent regions or provinces that formed part of the British Empire
- bryan-chamorro treaty — a treaty (1914) between the U.S. and Nicaragua by which the U.S. secured exclusive rights to build a canal across Nicaragua, to connect the Atlantic and Pacific.
- category merchandiser — A category merchandiser is a person whose job is to maintain stocks, manage displays and promote sales of a certain product category such as footwear.
- central limit theorem — any of several theorems stating that the sum of a number of random variables obeying certain conditions will assume a normal distribution as the number of variables becomes large.
- character development — the portrayal of people in a work of fiction in such a way that the reader or audience seems to learn more about them as they develop
- charity commissioners — (in Britain) members of a commission constituted to keep a register of charities and control charitable trusts
- charterhouse of parma — a novel (1839) by Stendhal.
- chequebook journalism — Chequebook journalism is the practice of paying people large sums of money for information about crimes or famous people in order to get material for newspaper articles.
- chinese forget-me-not — an eastern Asian plant, Cynoglossum amabile, of the borage family, having lance-shaped leaves and clustered, showy, blue, pink, or white flowers.
- chink in one's armour — a small but fatal weakness
- chloroformyl chloride — phosgene.
- christmas decorations — decorations of different kinds appropriate to Christmas, such as tinsel, candles, images of angels, etc.
- church-rosser theorem — (theory) A property of a reduction system that states that if an expression can be reduced by zero or more reduction steps to either expression M or expression N then there exists some other expression to which both M and N can be reduced. This implies that there is a unique normal form for any expression since M and N cannot be different normal forms because the theorem says they can be reduced to some other expression and normal forms are irreducible by definition. It does not imply that a normal form is reachable, only that if reduction terminates it will reach a unique normal form.
- civil rights movement — campaign for human freedoms
- class-relation method — (programming) A design technique based on the concepts of object-oriented programming and the Entity-Relationship model from the French company Softeam.
- column chromatography — the separation of mixtures into their constituents by preferential adsorption by a solid, as a column of silica (column chromatography) or a strip of filter paper (paper chromatography) or by a gel.
- come in from the cold — to come out of exile, isolation, etc.; resume an active role
- comfortably-furnished — containing comfortable furniture
- comparative philology — comparative linguistics.
- completing the square — a method, usually of solving quadratic equations, by which a quadratic expression, as x 2 − 4 x + 3, is written as the sum or difference of a perfect square and a constant, x 2 − 4 x + 4 + 3 − 4 = (x − 2) 2 − 1, by addition and subtraction of appropriate constant terms.
- computer architecture — the structure, behaviour, and design of computers
- constant mesh gearbox — A constant mesh gearbox is a type of transmission in which all forward gear pairs remain engaged.
- consummatory behavior — a behavior pattern that occurs in response to a stimulus and that achieves the satisfaction of a specific drive, as the eating of captured prey by a hungry predator (distinguished from appetitive behavior).
- cosmological redshift — the part of the redshift of celestial objects resulting from the expansion of the universe.
- crool someone's pitch — to spoil an opportunity for someone
- dacryocystorhinostomy — A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.
- dead from the neck up — stupid or unintelligent
- decompression chamber — a chamber in which the pressure of air can be varied slowly for returning people from abnormal pressures to atmospheric pressure without inducing decompression sickness
- diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
- dutch reformed church — of or relating to a Protestant denomination (Dutch Reformed Church) founded by Dutch settlers in New York in 1628 and renamed the Reformed Church in America in 1867.
- electrochromatography — chromatography effected by the influence of an applied electric field
- electroencephalograms — Plural form of electroencephalogram.
- electromyographically — By means of, or in terms of, electromyography.
- electronystagmography — A diagnostic test to record involuntary movements of the eye caused by a condition known as nystagmus. It can also be used to diagnose the cause of vertigo, dizziness or balance dysfunction by testing the vestibular system.
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