18-letter words containing c, h, e
- behavioral science — any of several studies, as sociology, psychology, anthropology, etc., that examine human activities in an attempt to discover recurrent patterns and to formulate rules about social behavior
- benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
- benzyl thiocyanate — a colorless, crystalline, water-insoluble solid, C 8 H 7 NS, used as an insecticide.
- bevel-faced hammer — a riveting hammer having an oblique face.
- bichromate process — any of several methods of photography in which the light-sensitive medium is alkaline bichromate associated with a colloid such as gum, albumen, or gelatin.
- biological therapy — biotherapy
- bird's-nest orchid — a brown parasitic Eurasian orchid, Neottia nidus-avis, whose thick fleshy roots resemble a bird's nest and contain a fungus on which the orchid feeds
- blanche of castile — ?1188–1252, queen consort (1223–26) of Louis VIII of France, born in Spain. The mother of Louis IX, she acted as regent during his minority (1226–36) and his absence on a crusade (1248–52)
- breach of contract — the act of breaking the conditions of a contract
- breach of security — an act that violates a country, area, or building's security measures
- breast enhancement — a surgical procedure to increase the size of a woman's breasts
- breathing exercise — an exercise intended to promote effective and healthy breathing and breath control
- brightness control — a control that enables the brightness of the image on a television screen, computer monitor, etc to be adjusted
- broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
- bromochloromethane — chlorobromomethane.
- bullnose stretcher — bull stretcher (def 1).
- bullnose-stretcher — Also called bullnose stretcher. a brick having one of the edges along its length rounded for laying as a stretcher in a sill or the like.
- butterhead lettuce — a major group of lettuce varieties having soft, pliable leaves and small, loose heads, including bibb and Boston lettuce
- call to the colors — call or order to serve in the armed forces
- camel's-hair brush — an artist's small brush, made of hair from a squirrel's tail
- camembert (cheese) — a soft, rich, creamy partly ripened cheese
- capital punishment — Capital punishment is punishment which involves the legal killing of a person who has committed a serious crime such as murder.
- carbonic anhydrase — an enzyme in blood cells that catalyses the decomposition of carbonic acid into carbon dioxide and water, facilitating the transport of carbon dioxide from the tissues to the lungs
- carbonic-anhydride — carbon dioxide.
- carboxyhaemoglobin — haemoglobin coordinated with carbon monoxide, formed as a result of carbon monoxide poisoning. As carbon monoxide is bound in preference to oxygen, tissues are deprived of oxygen
- carolina chickadee — a chickadee, Parus carolinensis, of the southeastern U.S., resembling but smaller than the black-capped chickadee.
- carpenterworm moth — any moth of the family Cossidae, as Prionoxystus robiniae of the U.S. and southern Canada, whose larvae bore into the trunks and branches of oaks, locusts, and other trees.
- carthaginian peace — the treaty by which Rome reduced Carthage to the status of a puppet state in 201 b.c.
- cash-for-questions — of, involved in, or relating to a scandal in which some MPs were accused of accepting bribes to ask particular questions in Parliament
- cassiopeia's chair — the five brightest stars in the constellation Cassiopeia that seem to form the shape of a W or M
- catastrophe theory — a mathematical theory that classifies surfaces according to their form
- catch one's breath — When you catch your breath while you are doing something energetic, you stop for a short time so that you can start breathing normally again.
- catcher in the rye — a novel (1951) by J. D. Salinger.
- caterpillar hunter — any of various carabid beetles of the genus Calosoma, of Europe and North America, which prey on the larvae of moths and butterflies
- catherine of siena — Saint. 1347–80, Italian mystic and ascetic; patron saint of the Dominican order. Feast day: April 29
- cathode dark space — Crookes dark space.
- cauliflower cheese — a dish of cauliflower with a cheese sauce, eaten hot
- cellular telephone — a mobile phone
- centralized school — a public school formed from the pupils and teachers of a number of discontinued smaller schools, especially in a rural district.
- centrifugal clutch — an automatic clutch in which the friction surfaces are engaged by weighted levers acting under centrifugal force at a certain speed of rotation
- cepheid (variable) — any of a class of pulsating, yellow, supergiant stars whose brightness varies in regular periods: from the period-luminosity relation, the distance of such a star can be determined
- chagos archipelago — group of islands in the Indian Ocean 1,180 mi (1,899 km) northeast of Mauritius, comprising the British Indian Ocean Territory: chief island, Diego Garcia
- chamber of horrors — a room, for example in a waxworks, containing objects, images or representations of people or scenes that are believed likely to frighten or horrify visitors
- chambered nautilus — nautilus (def 1).
- chandelier earring — one of a pair of long and ornate earrings that dangle from the earlobes, usually dropping from more than one level.
- change one's spots — to reform one's character
- change the subject — to select a new topic of conversation
- changement de pied — a jump in which the dancer's feet are reversed from the starting position.
- character disorder — a disorder characterized by socially undesirable behavior, as poor control of impulses or inability to maintain close emotional relationships, and by absence of anxiety or guilt.
- character encoding — (character) (Or "character encoding scheme") A mapping between binary data values and character code positions (or "code points"). Early systems stored characters in a variety of ways, e.g. four six-bit characters in a 24-bit word, but around 1960, eight-bit bytes started to become the most common data storage layout, with each character stored in one byte, typically in the ASCII character set. In the case of ASCII, the character encoding is an identity mapping: code position 65 maps to the byte value 65. This is possible because ASCII uses only code positions representable as single bytes, i.e., values between 0 and 255. (US-ASCII only uses values 0 to 127, in fact.) From the late 1990s, there was increased use of larger character sets such as Unicode and many CJK coded character sets. These can represent characters from many languages and more symbols.