18-letter words containing a, d, o, u, t
- gastroduodenostomy — See under gastroenterostomy.
- good conduct medal — a medal awarded an enlisted person for meritorious behavior during the period of service.
- greater roadrunner — either of two large terrestrial cuckoos of the genus Geococcyx of arid regions of the western U.S., Mexico, and Central America, especially G. californianus (greater roadrunner)
- haud your wheesht! — be silent! hush!
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- house of delegates — the lower house of the General Assembly in Virginia, West Virginia, and Maryland.
- hydroflumethiazide — A diuretic drug.
- ifs, ands, or buts — a supposition; uncertain possibility: The future is full of ifs.
- indecent behaviour — the offence of committing indecent acts
- indolebutyric acid — a white or yellowish, crystalline, water-insoluble powder, C 12 H 13 O 2 N, a plant hormone similar to indoleacetic acid and used for the same purposes.
- induction training — training intended to enable new staff and recruits to do their work
- inductive relation — A relation R between domains D and E is inductive if for all chains d1 .. dn in D and e1 .. en in E,
- indus civilization — an ancient civilization that flourished in the Indus River valley, from about 2500 to 1500 b.c.: extensive archaeological excavations at the main sites of Mohenjo-Daro and Harappa in Pakistan.
- industrial diamond — a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc
- infectious disease — illness spread by person to person
- informatory double — a double intended to inform one's partner that one has a strong hand and to urge a bid regardless of the strength of his or her hand.
- logarithmus dualis — (mathematics) (ld) Latin for logarithm base two. More commonly written as "log" with a subscript "2". Roughly the number of bits required to represent an integer.
- magnetic induction — Also called magnetic flux density. a vector quantity used as a measure of a magnetic field. Symbol: B.
- manufactured goods — products made by machine
- mato grosso do sul — a state of W central Brazil: formed in 1979 from part of Mato Grosso state. Capital: Campo Grande. Pop: 2 140 624 (2002). Area: 350 548 sq km (135 318 sq miles)
- misunderestimation — (nonstandard) An inaccurate underestimation, or an act of misunderestimating.
- modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
- mozilla foundation — (body, web, open source) The body set up by Netscape in January 1998 to coordinate development of the Mozilla browser and to provide a point of contact.
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- mutual aid society — A mutual aid society is an organization that provides benefits or other help to its members when they are affected by things such as death, sickness, disability, old age, or unemployment.
- national guardsman — guardsman (def 2).
- neurodevelopmental — Of or pertaining to the development of neurological pathways in the brain.
- non-contextualized — to put (a linguistic element, an action, etc.) in a context, especially one that is characteristic or appropriate, as for purposes of study.
- non-fundamentalist — (sometimes initial capital letter) a religious movement characterized by a strict belief in the literal interpretation of religious texts, especially within American Protestantism and Islam.
- non-understandable — capable of being understood; comprehensible.
- nonstriated muscle — smooth muscle
- objective modula-2 — (language) (Or "ObjM2") An extension to Modula-2 for Cocoa and GNUstep software development. Objective Modula-2 follows the Objective-C object model and retains the bracketed Smalltalk message passing syntax used in Objective-C. Classes written in ObjM2 can be used within ObjC and vice versa. ObjM2 also retains Modula-2's data encapsulation features, namely nested modules with explicit import and export lists. Due to the strict type checking in Modula-2, ObjM2 can be considered a much safer programming language than is ObjC, yet losing none of the capabilities of ObjC.
- oedipus at colonus — a tragedy by Sophocles, written toward the end of his life and produced posthumously in 401? b.c.
- on delicate ground — in a situation requiring tact
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- order of australia — an order awarded to Australians for outstanding achievement or for service to Australia or to humanity at large; established in 1975
- order of magnitude — You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- out of one's hands — no longer one's responsibility
- parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
- pass the hat round — to collect money, as for a cause
- passing modulation — a modulation of a temporary nature.
- passing-out parade — a ceremonial parade of cadets who have completed their training
- physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
- pitch-and-run shot — chip shot.
- play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
- point of departure — Nautical. the precise location of a vessel, established in order to set a course, especially in beginning a voyage in open water.
- population density — ratio: inhabitants to area
- population pyramid — a graph showing the distribution of a population by sex, age, etc.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.