21-letter words containing n, a, c, h, o
- character recognition — Character recognition is a process which allows computers to recognize written or printed characters such as numbers or letters and to change them into a form that the computer can use.
- charity commissioners — (in Britain) members of a commission constituted to keep a register of charities and control charitable trusts
- 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.
- chief warrant officer — a senior-ranking warrant officer in various armed forces
- chinese water torture — a form of torture in which water is made to drip for a long period of time onto a victim's forehead to drive him insane
- chink in one's armour — a small but fatal weakness
- christmas decorations — decorations of different kinds appropriate to Christmas, such as tinsel, candles, images of angels, etc.
- 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.
- clinical psychologist — a practitioner of clinical psychology
- clone-and-hack coding — case and paste
- 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.
- comfortably-furnished — containing comfortable furniture
- 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.
- conditional discharge — If someone who is convicted of an offence is given a conditional discharge by a court, they are not punished unless they later commit a further offence.
- congregational church — any evangelical Protestant Christian Church that is governed according to the principles of Congregationalism. In 1972 the majority of churches in the Congregational Church in England and Wales voted to become part of the United Reformed Church
- constant mesh gearbox — A constant mesh gearbox is a type of transmission in which all forward gear pairs remain engaged.
- constantine the great — (Flavius Valerius Aurelius Constantinus"the Great") a.d. 288?–337, Roman emperor 324–337: named Constantinople as the new capital; legally sanctioned Christian worship.
- 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).
- cottony-cushion scale — a small scale insect, Icerya purchasi, that is a pest of citrus trees in California: it is controlled by introducing an Australian ladybird, Rodolia cardinalis, into affected areas
- crude oil dehydration — Crude oil dehydration is the removal of water or water vapor from crude oil, by separating the oil from the water, often in a rotating centrifuge.
- cultural anthropology — the branch of anthropology dealing with cultural as opposed to biological and racial features
- dacryocystorhinostomy — A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.
- dance to another tune — to alter one's actions or opinions as a result of changed conditions
- de-ontological ethics — the branch of ethics dealing with right action and the nature of duty, without regard to the goodness or value of motives or the desirability of the ends of any act.
- 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
- dendrochronologically — By the use of, or with reference to dendrochronology.
- denominational school — a school associated with a particular religious denomination
- diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
- drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
- electroencephalograms — Plural form of electroencephalogram.
- electroencephalograph — A machine used for electroencephalography.
- 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.
- enhanced oil recovery — any of several techniques that make it possible to recover more oil than can be obtained by natural pressure, such as the injection of fluid or gases into an oilfield to force more oil to the surface
- enharmonic modulation — a change of key achieved by regarding a note in one key as an equivalent note in another. Thus E flat in the key of A flat could be regarded as D sharp in the key of B major
- first consonant shift — the consonant shift described by Grimm's law, which distinguishes Germanic languages from other Indo-European languages.
- foreign exchange rate — the rate that specifies how much the currency of a nation is worth in terms of the currency of another nation
- forensic anthropology — the branch of physical anthropology in which anthropological data, criteria, and techniques are used to determine the sex, age, genetic population, or parentage of skeletal or biological materials in questions of civil or criminal law.
- forward exchange rate — the exchange rate of a currency to be delivered at a later date
- french fried potatoes — a more formal name for chips
- gastrohepatic omentum — lesser omentum.
- get one's breath back — When you get your breath back after doing something energetic, you start breathing normally again.
- goldbach's conjecture — the conjecture that every even number greater than two is the sum of two prime numbers
- greenwich observatory — the national astronomical observatory of Great Britain, housed in a castle in E Sussex; formerly located at Greenwich.
- ground-effect machine — ACV (def 2).
- have a strong stomach — not to be prone to nausea
- have it coming to one — to deserve what one is about to suffer
- have one's cards read — If you have your cards read, you have your fortune told by someone who uses playing cards or tarot cards to tell you about yourself and predict your future.
- hawaiian honeycreeper — any small to medium-sized finches of the subfamily Drepanidinae, native to the Hawaiian Islands and including many rare and extinct species.
- hay-pauncefote treaty — an agreement (1901) between the U.S. and Great Britain giving the U.S. the sole right to build a canal across Central America connecting the Atlantic and Pacific.