16-letter words containing h, y, r, a
- 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.
- character comedy — comedy, or a comedy, in which the main source of humour is in the character of the people represented in it
- chemoprophylaxis — the prevention of disease using chemical drugs
- chernobyl packet — (networking) /cher-noh'b*l pak'*t/ A network packet that induces a broadcast storm and/or network meltdown, named in memory of the April 1986 nuclear accident at Chernobyl in Ukraine. The typical scenario involves an IP Ethernet datagram that passes through a gateway with both source and destination Ethernet address and IP address set as the respective broadcast addresses for the subnetworks being gated between. Compare Christmas tree packet.
- 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.
- cholecystography — radiography of the gall bladder after administration of a contrast medium
- chondrodysplasia — (medicine) A genetic disorder characterized by short-limbed dwarfism.
- chryselephantine — (of ancient Greek statues) made of or overlaid with gold and ivory
- churidar pyjamas — long tight-fitting trousers, worn by Indian men and women
- community charge — (formerly in Britain) a flat-rate charge paid by each adult in a community to his or her local authority in place of rates
- cornelian cherry — a flowering tree of the dogwood family Cornus mas
- coronary cushion — a thick band of vascular tissue in the coronet of horses and other hoofed animals that secretes the horny wall of the hoof.
- covariant theory — the principle that physical laws have the same form and interrelations in any system of coordinates in which they are expressed.
- crash test dummy — a dummy used in crash tests
- crossbow archery — the sport of shooting with a crossbow
- crystallographer — A person skilled in crystallography.
- crystallographic — of, relating to, or dealing with crystals or crystallography.
- cytoarchitecture — (biology) The arrangement of cells in an organism or organ.
- cytotrophoblasts — Plural form of cytotrophoblast.
- d-glyceraldehyde — an isomer of glyceraldehyde in which the OH group is on the right side of the asymmetric carbon atom.
- darwinian theory — Darwin's theory of evolution, which holds that all species of plants and animals developed from earlier forms by hereditary transmission of slight variations in successive generations, and that natural selection determines which forms will survive
- daylight robbery — If someone charges you a great deal of money for something and you think this is unfair or unreasonable, you can refer to this as daylight robbery.
- dehydroascorbate — (organic compound) Any salt or ester of dehydroascorbic acid.
- derbyshire chair — a chair of the mid-17th century, made of oak, usually without arms, and having a back of two carved rails between square uprights.
- diacetylmorphine — heroin.
- diesel-hydraulic — a locomotive driven by a diesel engine through hydraulic transmission and torque converters
- diethyl carbinol — a colorless, liquid isomer of amyl alcohol, (CH3CH2)2CHOH, used in drugs and as a solvent
- dihydroxyacetone — (organic compound) The compound CO(CH2OH)2 that has a number of industrial uses.
- dimethylcarbinol — isopropyl alcohol.
- diphosphorylated — (biochemistry) phosphorylated with two units of phosphoric acid.
- discographically — In terms of discography.
- do the necessary — to do something that is necessary in a particular situation
- dorothy canfield — Dorothy, Fisher, Dorothy Canfield.
- earthly paradise — Bible: Garden of Eden
- echocardiography — an instrument employing reflected ultrasonic waves to examine the structures and functioning of the heart.
- electrohydraulic — Relating to electrohydraulics.
- electromyographs — Plural form of electromyograph.
- electromyography — The recording of the electrical activity of muscle tissue, or its representation as a visual display or audible signal, using electrodes attached to the skin or inserted into the muscle.
- erymanthian boar — a wild boar that ravaged the district around Mount Erymanthus: captured by Hercules as his fourth labour
- erythroblastosis — A medical condition in which erythroblasts are abnormally found in the blood.
- ethinylestradiol — A derivative of 17\u03b2-estradiol, the major endogenous estrogen in humans, used in oral contraceptives.
- ethnocentrically — In an ethnocentric way.
- ethnographically — Regarding the ethnography (of a region).
- fashion industry — the industry that deals with the world of fashion
- flashbulb memory — the clear recollections that a person may have of the circumstances associated with a dramatic event
- flying phalanger — any of various small phalangers of Australia and New Guinea, having a parachutelike fold of skin on each side of the body to give gliding assistance in leaping.
- forefathers' day — the anniversary of the day (December 21, 1620, in Old Style December 11) on which the Pilgrims landed at Plymouth, Mass. Owing to an error in changing the date from the Old Style to the New, it is generally observed on December 22.