18-letter words containing s, m, a, i
- able-bodied seaman — an ordinary seaman, esp one in the merchant navy, who has been trained in certain skills
- abominable snowman — a large legendary manlike or apelike creature, alleged to inhabit the Himalayan Mountains
- absolute magnitude — the apparent magnitude a given star would have if it were situated at a distance of 10 parsecs (32.6 light years) from the earth
- academie francaise — French Academy.
- acorn risc machine — (processor) The original name of the Advanced RISC Machine.
- acoustic impedance — the total reaction of a medium to the transmission of sound through it, expressed as the ratio of sound pressure to particle velocity at a given point in the medium.
- addressing machine — a printer that prints addresses directly on to letters, labels, and envelopes
- adenocarcinomatous — Of or pertaining to adenocarcinomas.
- adenosylmethionine — (biochemistry) An adenosyl derivative of methionine that is a common co-substrate involved in transmethylation.
- administered price — a price determined by a seller's pricing policy and not by market forces, supply and demand, etc
- administrative law — law relating to the control of government power
- aerospace medicine — aviation medicine
- aerothermodynamics — the study of the exchange of heat between solids and gases, esp of the heating effect on aircraft flying through the air at very high speeds
- age discrimination — discrimination against older people, especially by employers
- ailanthus silkworm — a green silkworm, Samia walkeri, introduced into the U.S. from China, that feeds on the leaves of the ailanthus.
- air-to-air missile — a missile fired from an aircraft that targets other aircraft in flight
- air-to-sea missile — a missile fired from an aircraft that has a target on the sea
- airman first class — the third lowest enlisted rank in the US Air Force, above airman and below senior airman
- alaska-hawaii time — the civil time officially adopted for a country or region, usually the civil time of some specific meridian lying within the region. The standard time zones in the U.S. (Atlantic time, Eastern time, Central time, Mountain time, Pacific time, Yukon time, Alaska-Hawaii time, and Bering time) use the civil times of the 60th, 75th, 90th, 105th, 120th, 135th, 150th, and 165th meridians respectively, the difference of time between one zone and the next being exactly one hour.
- alexius i comnenus — 1048–1118, ruler of the Byzantine Empire (1081–1118)
- all meals included — All meals included is used to indicate that a price, especially the price of a hotel stay or vacation, includes the cost of meals in the hotel.
- all the king's men — a novel (1946) by Robert Penn Warren.
- aluminium sulphate — a white crystalline salt used in the paper, textile, and dyeing industries and in the purification of water. Formula: Al2(SO4)3
- aminosuccinic acid — aspartic acid.
- ammonium phosphate — monoammonium phosphate.
- andrew file system — (operating system, storage) (AFS) The distributed file system of the Andrew Project, adopted by the OSF as part of their Distributed Computing Environment.
- ansi minimal basic — (language, standard) ANS X3.60-1978.
- anthropomorphising — Present participle of anthropomorphise.
- anti-commercialism — the principles, practices, and spirit of commerce.
- anti-establishment — opposed to established authority
- anti-masonic party — a former political party (1826–35) that opposed Freemasonry in civil affairs.
- anti-miscegenation — marriage or cohabitation between two people from different racial groups, especially, in the U.S., between a black person and a white person: In 1968 the Supreme Court ruled unanimously that state laws prohibiting miscegenation were unconstitutional.
- anti-scholasticism — narrow adherence to traditional teachings, doctrines, or methods.
- antidiscrimination — (legal) Opposing or disallowing discrimination.
- antiferromagnetism — the phenomenon exhibited by substances that resemble paramagnetic substances in the value of their relative permeability but that behave like ferromagnetic substances when their temperature is varied
- aphrodite of melos — a Greek statue of Venus in marble, c200 b.c., found in 1820 on Melos and now in the Louvre, Paris.
- applied kinematics — kinematics (def 2).
- arm's-length price — a price of a transaction agreed in accordance with market values, disregarding any connection such as common ownership of the companies involved
- as near as damn it — as near as possible; very near
- aseptic meningitis — a mild form of meningitis usually caused by one of several viruses, characterized by headache, fever, and neck stiffness.
- assignment problem — (mathematics, algorithm) (Or "linear assignment") Any problem involving minimising the sum of C(a, b) over a set P of pairs (a, b) where a is an element of some set A and b is an element of set B, and C is some function, under constraints such as "each element of A must appear exactly once in P" or similarly for B, or both. For example, the a's could be workers and the b's projects. The problem is "linear" because the "cost function" C() depends only on the particular pairing (a, b) and is independent of all other pairings.
- associated company — a company which is largely controlled by its parent company because the latter owns anything up to 50% of the shares
- associative memory — content addressable memory
- assortative mating — the reproductive pairing of individuals that have more traits in common than would likely be the case if mating were random (contrasted with disassortative mating).
- assumption of risk — Assumption of risk is the practice of paying for minor losses yourself, but protecting against catastrophic losses by buying insurance cover.
- astrometric binary — a binary star that can be recognized as such because of its undulating proper motion.
- astronomical clock — a complex clock showing astronomical phenomena, such as the phases of the moon
- asymmetric warfare — warfare in which opposing groups or nations have unequal military resources, and the weaker opponent uses unconventional weapons and tactics, as terrorism, to exploit the vulnerabilities of the enemy.
- asymptotic freedom — a property of the force between quarks, according to quantum chromodynamics, such that they behave almost like free particles when they are close together within a hadron.
- at the last minute — almost too late
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