22-letter words containing a, h, e
- dehiwala-mount lavinia — a city in SW Sri Lanka, on the Indian Ocean.
- dehydroepiandrosterone — the most abundant steroid in the human body, that is involved in the manufacture of testosterone, oestrogen, progesterone, and corticosterone
- delayed-action shutter — a camera shutter that opens after an interval set by the photographer
- denying the antecedent — the fallacy of inferring the falsehood of the consequent of a conditional statement, given the truth of the conditional and the falsehood of its antecedent, as if there are five of them, there are more than four: there are not five, so there are not more than four
- diethylbarbituric acid — barbital
- dihydroxyphenylalanine — dopa.
- directed acyclic graph — (DAG) A directed graph containing no cycles. This means that if there is a route from node A to node B then there is no way back.
- directional microphone — a microphone that has a greater sensitivity to sounds coming from a particular area in front of it: used to eliminate unwanted sounds.
- dishonorable discharge — the discharge of a person from military service for an offense more serious than one for which a bad-conduct discharge is given.
- disposable soma theory — the theory that ageing is caused by the body having increasingly fewer resources to allocate towards repairing wear and damage to tissues
- dominant seventh chord — a chord consisting of the dominant and the major third, perfect fifth, and minor seventh above it. Its most natural resolution is to a chord on the tonic
- don't hold your breath — sth is unlikely to happen soon
- double blackwall hitch — a kind of knot
- dread high bit disease — (character) A condition endemic to PRIME (also known as "PR1ME") minicomputers that results in all the characters having their high bit (0x80, see meta bit) ON rather than OFF. This complicates transporting files to other systems and talking to true 8-bit devices. Folklore had it that PRIME adopted the convention in order to save 25 cents per serial line per machine; PRIME old-timers, on the other hand, claim they inherited the disease from Honeywell via customer NASA's compatibility requirements and struggled heroically to cure it. Whoever was responsible, this probably qualifies as one of the most cretinous design tradeoffs ever made. A few other machines have exhibited similar brain damage.
- drumhead court-martial — a court-martial held, usually on a battlefield, for the summary trial of charges of offenses committed during military operations.
- duplex high speed data — (DHSD) A term which describes a full-duplex channel that can carry 64 kilobits per second. This is the kind of service provided by an Inmarsat-B type portable earth station or a leased line (not ISDN).
- earth inductor compass — a compass actuated by induction from the earth's magnetic field.
- echegaray y eizaguirre — José (xoˈse). 1832–1916, Spanish dramatist, statesman, and mathematician. His plays include Madman or Saint (1877); Nobel prize for literature 1904
- ectotrophic mycorrhiza — a type of mycorrhiza, typical of temperate and Boreal trees, in which the fungus forms a layer on the outside of the roots of the plant
- educational psychology — a branch of psychology concerned with developing effective educational techniques and dealing with psychological problems in schools.
- educational technology — the use of technology, such as computers, within education, to aid the learning process
- electroencephalographs — Plural form of electroencephalograph.
- electroencephalography — The measurement of electrical activity in different parts of the brain and the recording of such activity as a visual trace (on paper or on an oscilloscope screen).
- electrophysiologically — In an electrophysiological way.
- electrothermal printer — a printer that produces characters by burning the image on specially coated paper
- enchanter's nightshade — any of several onagraceous plants of the genus Circaea, esp C. lutetiana, having small white flowers and bristly fruits
- endotrophic mycorrhiza — the most widespread and common type of mycorrhiza, in which the fungus lives within the cells of the roots of the plant
- english cocker spaniel — any of a breed of small spaniel, similar to and the progenitor of the cocker spaniel
- enhanced parallel port — (hardware) (EPP) A parallel port that confirms to the IEEE's EPP standard. An EPP is actually an expansion bus that can handle 64 disk drives and other peripherals.
- equal rights amendment — a proposed amendment to the US Constitution enshrining equality between the sexes
- every now and then etc — You use every in the expressions every now and then, every now and again, every once in a while, and every so often in order to indicate that something happens occasionally.
- evolutionary algorithm — (EA) An algorithm which incorporates aspects of natural selection or survival of the fittest. An evolutionary algorithm maintains a population of structures (usually randomly generated initially), that evolves according to rules of selection, recombination, mutation and survival, referred to as genetic operators. A shared "environment" determines the fitness or performance of each individual in the population. The fittest individuals are more likely to be selected for reproduction (retention or duplication), while recombination and mutation modify those individuals, yielding potentially superior ones. EAs are one kind of evolutionary computation and differ from genetic algorithms. A GA generates each individual from some encoded form known as a "chromosome" and it is these which are combined or mutated to breed new individuals. EAs are useful for optimisation when other techniques such as gradient descent or direct, analytical discovery are not possible. Combinatoric and real-valued function optimisation in which the optimisation surface or fitness landscape is "rugged", possessing many locally optimal solutions, are well suited for evolutionary algorithms.
- examining the entrails — The process of grovelling through a core dump or hex image in an attempt to discover the bug that brought a program or system down. The reference is to divination from the entrails of a sacrified animal. Compare runes, incantation, black art, desk check.
- fall prey to something — To fall prey to something bad means to be taken over or affected by it.
- fetal alcohol syndrome — a pattern of birth defects caused by maternal consumption of alcohol during pregnancy: considered as one of the fetal alcohol spectrum disorders. Abbreviation: FAS.
- fifth earl of rosebery — Archibald Philip Primrose [prim-rohz] /ˈprɪmˌroʊz/ (Show IPA), 5th Earl of, 1847–1929, British statesman and author: prime minister 1894–95.
- first cab off the rank — the first person, etc, to do or take advantage of something
- floating exchange rate — a system in which the value of a currency fluctuates against other currencies in accordance with market forces
- foot-and-mouth disease — an acute, contagious, febrile disease of cattle, hogs, sheep, and other hoofed animals, caused by any of various rhinoviruses and characterized by vesicular eruptions in the mouth and about the hoofs, teats, and udder.
- fort benjamin harrison — a military reservation and U.S. Army training center in central Indiana, NE of Indianapolis.
- four-hundred-day clock — a clock that needs to be wound once a year, having the works exposed under a glass dome and utilizing a torsion pendulum.
- front of house manager — A front of house manager is responsible for the reception and reservations at a hotel.
- full english breakfast — morning meal of eggs, bacon, etc.
- gallamine triethiodide — a neuromuscular blocking drug, C 30 H 60 I 3 N 3 O 3 , similar to curare, used as a skeletal muscle relaxant in conjunction with surgical anesthesia.
- garmisch-partenkirchen — a city in S Germany, in the Bavarian Alps.
- geographic determinism — a doctrine that regards geographical conditions as the determining or molding agency of group life.
- get (or have) wind of — to get (or have) information or a hint concerning; hear (or know) of
- get it into one's head — to come to believe (an idea, esp a whimsical one)
- get one's act together — anything done, being done, or to be done; deed; performance: a heroic act.
- get one's hands on sth — If you get your hands on something or lay your hands on something, you manage to find it or obtain it, usually after some difficulty.