19-letter words containing a, r, e, t, i
- analytical geometry — the branch of geometry that uses algebraic notation and analysis to locate a geometric point in terms of a coordinate system; coordinate geometry
- ancillary equipment — Ancillary equipment is machines and other technical things which are used with the main items of equipment to create a complete system.
- angioneurotic edema — swelling that occurs just beneath the surface of the skin or mucous membranes.
- angle of reflection — the angle that a beam of reflected radiation makes with the normal to a surface at the point of reflection
- angle of refraction — the angle that a refracted beam of radiation makes with the normal to the surface between two media at the point of refraction
- anno urbis conditae — in a (specified) year from the founding of the city: the ancient Romans reckoned dates from Rome's founding, c. 753 b.c.
- antarctic peninsula — the largest peninsula of Antarctica, between the Weddell Sea and the Pacific: consists of Graham Land in the north and the Palmer Peninsula in the south
- anterograde amnesia — amnesia caused by brain damage in which the memory loss relates to events occurring after the damage
- anthropic principle — the cosmological theory that the presence of life in the universe limits the ways in which the very early universe could have evolved
- anthropocentrically — regarding the human being as the central fact of the universe.
- anti-comintern pact — a pact formed in 1936, based on agreements between Germany and Japan to oppose communism and the Third International: Italy and Spain subsequently became signatories.
- anticholinesterases — Plural form of anticholinesterase.
- anticipatory breach — a declaration by one party to a contract that it does not intend to fulfil its obligations to the second party, who can then accept this declaration and choose not to be bound by the contract
- antimony trisulfide — a black or orange-red crystalline compound, Sb2S3, used as a pigment, in pyrotechnics and matches, for fireproofing fabrics and paper, etc.
- antoine louis barye — Antoine Louis [ahn-twan lwee] /ɑ̃ˈtwan lwi/ (Show IPA), 1795–1875, French sculptor and painter.
- appetite depressant — a product which reduces one's appetite
- appetitive behavior — activity that increases the likelihood of satisfying a specific need, as restless searching for food by a hungry predator (distinguished from consummatory behavior).
- appointments bureau — an office responsible for filling appointments
- appraisal interview — an interview by the manager of an employee who is being appraised
- arbitration service — a service which provides an impartial referee to settle disputes
- arecibo observatory — an observatory in Puerto Rico at which the world's largest dish radio telescope (diameter 305 m) is situated. It is operated by the National Astronomy and Ionosphere Center
- aristotle's lantern — a complex arrangement of muscles and calcareous teeth and plates forming an eversible organ in most echinoids, functioning in mastication.
- arkwright furniture — late medieval English furniture of simple construction.
- armed response unit — (in Britain) a unit of police officers who are trained to use firearms in situations where unarmed police officers would be in danger
- aromatase inhibitor — any of a class of drugs that inhibit the action of aromatase: used in the treatment of breast and ovarian cancer
- arsenic trichloride — a colorless or yellow, oily, poisonous liquid, AsCl 3 , used chiefly as an intermediate in the manufacture of organic arsenicals.
- artemis microkernel — (operating system) A microkernel currently under development by Dave Hudson <[email protected]>, scheduled for release under GPL in May 1995. It is targeted at embedded applications on Intel 80386, Intel 486 and Pentium based systems.
- articulated vehicle — a large vehicle (esp a lorry) made in two separate sections, a tractor and a trailer, connected by a pivoted bar
- artificial additive — artificial flavouring, colouring or preservatives
- artificial language — an invented language, esp one intended as an international medium of communication or for use with computers
- ask for a signature — If you ask for a signature, you ask someone to write their name, in their own characteristic way, on a document.
- assistant professor — An assistant professor is a college teacher who ranks above an instructor but below an associate professor.
- assistant secretary — a person who assists a secretary in their work
- associate professor — An associate professor is a college teacher who ranks above an assistant professor but below a professor.
- associative storage — a storage device in which the information is identified by content rather than by an address
- asymmetric war-fare — 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.
- at bus architecture — Industry Standard Architecture
- at one's discretion — as one wishes
- at one's fingertips — readily available and within one's mental grasp
- at your convenience — at a time suitable to you
- atmospheric braking — a technique of reentry in which the vehicle is maneuvered in the upper atmosphere so as to lose velocity by utilizing drag without overheating.
- attachment disorder — an emotional and behavioral disorder arising from a failure to form a strong bond with one’s primary caregiver in early childhood and affecting one’s social relationships in later childhood and adulthood. See also attachment (def 3a).
- attendance register — an official list of people who are present at an institution such as a school
- attractive nuisance — Law. a doctrine of tort law under which a person who creates or permits to exist on his or her land a dangerous condition attractive to children, as an unfenced swimming pool, is liable for their resulting injuries, even though the injured are trespassers.
- audio response unit — a device that enables a computer to give a spoken response by generating sounds similar to human speech.
- auriculoventricular — atrioventricular.
- australian tea tree — a shrubby Australian tree, Leptospermum laevigatum, of the myrtle family, having lance-shaped leaves and white, bell-shaped flowers.
- author's alteration — a correction or change made in typeset copy that is not a correction of an error introduced by the compositor. Abbreviation: AA, A.A., a.a., aa.
- autoerotic asphyxia — asphyxia caused by intentionally strangling oneself while masturbating in order to intensify the orgasm through reduced oxygen flow to the brain.
- bacillary dysentery — shigellosis.