16-letter words containing a, h, r, d
- birthday present — a gift given to someone on their birthday
- bleaching powder — a white powder with the odour of chlorine, consisting of chlorinated calcium hydroxide with an approximate formula CaCl(OCl).4H2O. It is used in solution as a bleaching agent and disinfectant
- bonded warehouse — a warehouse in which dutiable goods are deposited until duty is paid or the goods are cleared for export
- bonhomme richard — the flagship of John Paul Jones.
- boreal chickadee — a brown-capped, black-throated chickadee (Parus hudsonicus) found near the Atlantic coast from Labrador to N New York
- bornholm disease — an epidemic virus infection characterized by pain round the base of the chest
- break the record — surpass previous highest, best
- bright and early — very early in the morning
- bright's disease — chronic inflammation of the kidneys; chronic nephritis
- british honduras — Belize
- broad-shouldered — having broad shoulders
- bureau de change — a place where foreign currencies can be exchanged
- caducibranchiate — (of many amphibians, such as frogs) having gills during one stage of the life cycle only
- calcium chloride — a white deliquescent salt occurring naturally in seawater and used in the de-icing of roads and as a drying agent. Formula: CaCl2
- camborne-redruth — a former (until 1974) urban district in SW England, in Cornwall: formed in 1934 by the amalgamation of the neighbouring towns of Camborne and Redruth. Pop: 39 936 (2001)
- cape cod lighter — a device for lighting a fire, as in a fireplace, consisting of a lump of nonflammable material on a metal rod, that is soaked in kerosene or the like and lighted with a match.
- cardiotachometer — a device for counting heartbeats, usually displaying the number of beats per minute
- cash on delivery — If you pay for goods cash on delivery, you pay for them in cash when they are delivered. The abbreviation C.O.D. is also used.
- catch red-handed — If someone is caught red-handed, they are caught while they are in the act of doing something wrong.
- catchwater drain — a channel cut along the edge of high ground to catch surface water from it and divert it away from low-lying ground
- cathedral church — the principal church in a diocese
- catherine howard — Catherine, c1520–42, fifth wife of Henry VIII.
- cathode ray tube — (hardware) (CRT) An electrical device for displaying images by exciting phosphor dots with a scanned electron beam. CRTs are found in computer VDUs and monitors, televisions and oscilloscopes. The first commercially practical CRT was perfected on 29 January 1901 by Allen B DuMont. A large glass envelope containing a negative electrode (the cathode) emits electrons (formerly called "cathode rays") when heated, as in a vacuum tube. The electrons are accelerated across a large voltage gradient toward the flat surface of the tube (the screen) which is covered with phosphor. When an electron strikes the phosphor, light is emitted. The electron beam is deflected by electromagnetic coils around the outside of the tube so that it scans across the screen, usually in horizontal stripes. This scan pattern is known as a raster. By controlling the current in the beam, the brightness at any particular point (roughly a "pixel") can be varied. Different phosphors have different "persistence" - the length of time for which they glow after being struck by electrons. If the scanning is done fast enough, the eye sees a steady image, due to both the persistence of the phospor and of the eye itself. CRTs also differ in their dot pitch, which determines their spatial resolution, and in whether they use interlace or not.
- cathode-ray tube — A cathode-ray tube is a device in televisions and computer terminals which sends an image onto the screen.
- centrally heated — A centrally heated building or room has central heating.
- cepheid variable — any of a class of variable stars with regular cycles of variations in luminosity (most ranging from three to fifty days). There is a relationship between the periods of variation and the absolute magnitudes, which is used for measuring the distance of such stars
- chamber of trade — a national organization representing local chambers of commerce
- channel islander — a person who comes from one of the Channel Islands
- character comedy — comedy, or a comedy, in which the main source of humour is in the character of the people represented in it
- charged particle — an atomic particle with a positive or negative charge, as an electron, proton, or helium ion
- charles chandler — Charles Frederick, 1836–1925, U.S. scientist, educator, and public-health expert.
- charmed particle — See at charmed (def 2).
- chase the dragon — to smoke opium or heroin
- cheddar (cheese) — a variety of hard, smooth cheese, mild to very sharp
- chest of drawers — A chest of drawers is a low, flat piece of furniture with drawers in which you keep clothes and other things.
- chevaux-de-frise — plural of cheval-de-frise.
- chiclet keyboard — (hardware, abuse) A keyboard with a small, flat rectangular or lozenge-shaped rubber or plastic keys that look like pieces of Chiclets chewing gum. Used especially to describe the original IBM PCjr keyboard. Vendors unanimously liked these because they were cheap, and a lot of early portable and laptop computers were launched with them. Customers rejected the idea with almost equal unanimity, and chiclets are not often seen on anything larger than a digital watch any more.
- child psychiatry — the branch of psychiatry specializing in the treatment of children.
- childcare center — a place or business offering childcare for working parents
- childcare worker — someone who takes care of children in return for money
- children's panel — (in Scotland) a group of representatives of relevant agencies, with the power to deal with a child under sixteen who is in criminal or family trouble. Its hearings are private and replace most of the functions of juvenile courts
- chinese calendar — the former calendar of China, in which the year consisted of 12 lunar months with an intercalary month added seven times every 19 years to reconcile the lunar year of 354 days with the solar year of 365 days, time being reckoned in 60-year cycles with the first cycle dating from 2637 b.c.
- chloracetic acid — chloroacetic acid.
- chlordiazepoxide — a chemical compound used as a tranquillizer and muscle relaxant and in the treatment of delirium tremens. Formula: C16H14ClN3O
- chlorinated lime — bleaching powder.
- chlorogenic acid — a colorless crystalline acid, C 16 H 18 O 9 , that is important in plant metabolism and is purportedly responsible for the browning or blackening of cut apples, potatoes, and other fruits and vegetables.
- chondrodysplasia — (medicine) A genetic disorder characterized by short-limbed dwarfism.
- christmas dinner — the main meal on Christmas day, eaten any time in the afternoon or evening
- christmas island — an island in the Indian Ocean, south of Java: administered by Singapore (1900–58), now by Australia; phosphate mining. Pop: 1496 (2013 est). Area: 135 sq km (52 sq miles)
- churidar pyjamas — long tight-fitting trousers, worn by Indian men and women