21-letter words containing h, a, l, e
- breakthrough bleeding — bleeding from the uterus that occurs between menstrual periods
- breath-of-life packet — (XEROX PARC) An Ethernet packet that contains bootstrap code, periodically sent out from a working computer to infuse the "breath of life" into any computer on the network that has crashed. Computers depending on such packets have sufficient hardware or firmware code to wait for (or request) such a packet during the reboot process. See also dickless workstation. The notional "kiss-of-death packet", with a function complementary to that of a breath-of-life packet, is recommended for dealing with hosts that consume too many network resources. Though "kiss-of-death packet" is usually used in jest, there is at least one documented instance of an Internet subnet with limited address-table slots in a gateway computer in which such packets were routinely used to compete for slots, rather like Christmas shoppers competing for scarce parking spaces.
- british anti-lewisite — a colorless, oily, viscous liquid, C 3 H 8 OS 2 , originally developed as an antidote to lewisite and now used in treating bismuth, gold, mercury, and arsenic poisoning.
- british sign language — the main sign language used by deaf people in the United Kingdom
- broadleaved whitebeam — a whitebeam, Sorbus latifolia, widely found in France and England, also planted as an ornamental
- businessman's holiday — busman's holiday.
- carrie chapman l catt — Carrie Chapman Lane, 1859–1947, U.S. leader in women's suffrage movements.
- cascading style sheet — a file recording style details, such as fonts, colours, etc, that is read by browsers so that style is consistent over multiple web pages
- catch one flat footed — having flatfeet.
- caviar to the general — a thing appealing only to a highly cultivated taste: Hamlet II, ii
- central daylight time — the time observed in the Central Time Zone of the United states when Daylight Savings Time is in effect; GMT -5
- 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
- charge-coupled device — an electronic device, used in imaging and signal processing, in which information is represented as packets of electric charge that are stored in an array of tiny closely spaced capacitors and can be moved from one capacitor to another in a controlled way
- charles edward stuart — a member of the royal family that ruled in Scotland from 1371 to 1714 and in England from 1603 to 1714.
- 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 lantern plant — winter cherry (def 1).
- chinese-lantern plant — a perennial ground-cherry (Physalis alkekengi) grown for winter bouquets because of the bladderlike red calyx that surrounds its small, tomatolike fruit
- chocolate chip cookie — a biscuit containing chips of chocolate
- 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.
- clone-and-hack coding — case and paste
- 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.
- 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
- corporate hospitality — Corporate hospitality is the entertainment that a company offers to its most valued clients, for example by inviting them to sporting events and providing them with food and drink.
- cosmological redshift — the part of the redshift of celestial objects resulting from the expansion of the universe.
- 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.
- data parallel haskell — (language, parallel) Adds Parallel Objects with arbitrary Dimension (PODs) and POD comprehensions to Haskell.
- dataflow architecture — a means of arranging computer data processing in which operations are governed by the data present and the processing it requires rather than by a prewritten program that awaits data to be processed
- 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.
- dendrochronologically — By the use of, or with reference to dendrochronology.
- denominational school — a school associated with a particular religious denomination
- disestablishmentarian — a person who favors the separation of church and state, especially the withdrawal of special rights, status, and support granted an established church by a state; an advocate of disestablishing a state church.
- double spanish burton — a tackle having one standing block and two running blocks, giving a mechanical advantage of five, neglecting friction.
- downhole safety valve — A downhole safety valve is a piece of safety equipment used inside a well, which isolates wellbore pressure and fluid if something bad happens.
- eastern daylight time — a time zone applicable to many eastern areas of the United States during the summer months, being a daylight-saving variant of Eastern Standard Time
- electrochromatography — chromatography effected by the influence of an applied electric field
- electroencephalograms — Plural form of electroencephalogram.
- electroencephalograph — A machine used for electroencephalography.
- 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.
- 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
- epidemic encephalitis — any type of widespread encephalitis caused by various viruses
- equiangular hyperbola — a hyperbola with transverse and conjugate axes equal to each other.
- ethernet private line — (networking) (EPL) A data service defined by the Metro Ethernet Forum, providing a point-to-point Ethernet connection between a pair of dedicated User-Network Interfaces (UNIs), with a high degree of transparency.
- fermat's last theorem — the unproved theorem that the equation xn + yn = zn has no solution for x, y, z nonzero integers when n is greater than 2.