20-letter words containing r, e, l, a, x
- aids-related complex — a condition that may develop into AIDS, characterized by the enlargement of the lymph nodes
- alexandra feodorovna — 1872–1918, empress of Russia (wife of Nicholas II).
- algebraic expression — a symbol or a combination of symbols used in algebra, containing one or more numbers, variables, and arithmetic operations: how to solve algebraic expressions.
- all-ordinaries index — an index of share prices on the Australian Stock Exchange giving a weighted arithmetic average of 245 ordinary shares
- antimony oxychloride — a white, water-insoluble powder, SbOCl, used chiefly in the manufacture of antimony salts.
- asexual reproduction — reproduction, as budding, fission, or spore formation, not involving the union of gametes.
- auxiliary power unit — an additional engine fitted to an aircraft to operate when the main engines are not in use
- barred spiral galaxy — a spiral galaxy whose center has the form of an extended bar.
- benzene hexachloride — a compound, C6H6Cl6, used as an insecticide
- bernard of clairvaux — Saint. ?1090–1153, French abbot and theologian, who founded the stricter branch of the Cistercians in 1115
- bomb disposal expert — an expert in bomb disposal
- capital transfer tax — (in Britain) a tax payable from 1974 to 1986 at progressive rates on the cumulative total of gifts of money or property made during the donor's lifetime or after his death. It was replaced by inheritance tax
- colonial experiencer — affluent young Englishman who gained experience of farming, etc in colonial Australia
- complex carbohydrate — a carbohydrate, as sucrose or starch, that consists of two or more monosaccharide units.
- coordination complex — one of a number of complex compounds in which an atom or group of atoms is bound to the central atom by a shared pair of electrons supplied by the coordinated group and not by the central atom
- epitaxial transistor — a transistor made by depositing a thin pure layer of semiconductor material (epitaxial layer) onto a crystalline support by epitaxy. The layer acts as one of the electrode regions, usually the collector
- exercise, left as an — Used to complete a proof in technical books when one doesn't mind a handwave, or to avoid one entirely. The complete phrase is: "The proof [or "the rest"] is left as an exercise for the reader." This comment *has* occasionally been attached to unsolved research problems by authors possessed of either an evil sense of humour or a vast faith in the capabilities of their audiences.
- explicit parallelism — A feature of a programming language for a parallel processing system which allows or forces the programmer to annotate his program to indicate which parts should be executed as independent parallel tasks. This is obviously more work for the programmer than a system with implicit parallelism (where the system decides automatically which parts to run in parallel) but may allow higher performance.
- external respiration — exchange of oxygen and carbon dioxide across external or respiratory surfaces, as gills or lungs, in multicellular organisms
- friedrich max müller — Friedrich Max [free-drik maks;; German free-drikh mahks] /ˈfri drɪk mæks;; German ˈfri drɪx mɑks/ (Show IPA), 1823–1900, English Sanskrit scholar and philologist born in Germany.
- hexafluoroantimonate — (inorganic chemistry) The anion SbF6- or any salt containing this anion; it is used as an acidic catalyst in epoxide opening reactions.
- in the lap of luxury — If you say that someone lives in the lap of luxury, you mean that they live in conditions of great comfort and wealth.
- linear extrapolation — Statistics, Mathematics. extrapolation using a linear equation to estimate the value of a variable or function outside the tabulated or observed range.
- mail exchange record — (messaging) (MX Record) A DNS resource record type that says which SMTP server handles electronic mail for a particular domain. E.g. the MX record foo.co.uk. 1054 IN MX 10 mail.foo.co.uk. means that mail for an address like "[email protected]" should be sent to "mail.foo.co.uk". There can be several servers for a domain. The "10" is a priority - the server with the lowest number will be tried first.
- mannitol hexanitrate — a colorless, crystalline, water-insoluble, explosive solid, C 6 H 8 N 6 O 1 8 , used as a fulminating agent in percussion caps and in the treatment of hypertension and coronary insufficiency.
- menstrual extraction — an abortion procedure involving suction aspiration of the uterine contents early in gestation, before the first missed menstrual period: sometimes performed later.
- microcrystalline wax — Microcrystalline wax is a wax used as a stiffening agent and as a coating agent for tablets and capsules.
- pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
- peroxyacetyl nitrate — an unstable nitrogen compound, found in certain types of smog, that is an irritant, esp. to the eyes and to plants
- peroxysulphuric acid — a white hygroscopic crystalline unstable oxidizing acid. Formula: H2SO5
- second earl of essex — 2nd Earl of, Devereux, Robert.
- to go the extra mile — If you say that someone is willing to go the extra mile, you mean that they are willing to make a special effort to do or achieve something.
- trailing vortex drag — drag arising from vortices that occur behind a body moving through a gas or liquid
- uranium hexafluoride — a colorless, water-insoluble, crystalline, volatile solid, UF 6 , used in its gaseous state in separating uranium 235 from uranium.
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