22-letter words containing t, h, e, a, r, i
- dalton's atomic theory — the theory that matter consists of indivisible particles called atoms and that atoms of a given element are all identical and can neither be created nor destroyed. Compounds are formed by combination of atoms in simple ratios to give compound atoms (molecules). The theory was the basis of modern chemistry
- damn with faint praise — If someone damns something with faint praise, they say something about it which sounds quite nice but is not enthusiastic, and shows that they do not have a high opinion of it.
- dashing white sergeant — a lively Scottish dance for sets of six people
- de broglie wave length — the postulate of wave mechanics that a particle of mass m moving at a velocity v will have the properties of a wave of wavelength h / mv (de Broglie wavelength) where h is Planck's constant.
- 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
- diethylbarbituric acid — barbital
- 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.
- 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
- 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.
- earth inductor compass — a compass actuated by induction from the earth's magnetic field.
- 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
- 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
- equal rights amendment — a proposed amendment to the US Constitution enshrining equality between the sexes
- 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.
- 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
- fort benjamin harrison — a military reservation and U.S. Army training center in central Indiana, NE of Indianapolis.
- 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
- give (or get) the air — to reject (or be rejected) as a lover
- give a person what for — to punish or reprimand a person severely
- give something a whirl — to attempt or give a trial to something
- go their separate ways — When two or more people who have been together for some time go their separate ways, they go to different places or end their relationship.
- graph rewriting system — An extension of a term rewriting system which uses graph reduction on terms represented by directed graphs to avoid duplication of work by sharing expressions.
- gravitational redshift — (in general relativity) the shift toward longer wavelengths of electromagnetic radiation emitted by a source in a gravitational field, especially at the surface of a massive star.
- great australian bight — a wide bay in S Australia.
- green around the gills — the respiratory organ of aquatic animals, as fish, that breathe oxygen dissolved in water.
- guanosine triphosphate — GTP.
- gum bichromate process — a contact printing method in which the image is formed on a coating of sensitized gum containing a suitable colored pigment and potassium or ammonium dichromate.
- halfwave rectification — a rectifier that changes only one half of a cycle of alternating current into a pulsating, direct current.
- hamishah asar bishevat — Tu Bishevat.
- hammersmith and fulham — a borough of Greater London on the River Thames: established in 1965 by the amalgamation of Fulham and Hammersmith. Pop: 174 200 (2003 est). Area: 16 sq km (6 sq miles)
- hans christian oersted — Hans Christian [hahns kris-tyahn] /hɑns ˈkrɪs tyɑn/ (Show IPA), 1777–1851, Danish physicist.
- have one's heart in it — to have enthusiasm for something
- have other fish to fry — have sth else to do
- hawaiian standard time — the time used in the Hawaiian time zone
- heart is in your mouth — If your heart is in your mouth, you feel very excited, worried, or frightened.