19-letter words containing r, a, l, i
- 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
- 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
- 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.
- anthropomorphically — ascribing human form or attributes to a being or thing not human, especially to a deity.
- anticholinesterases — Plural form of anticholinesterase.
- 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.
- apollonius of perga — ?261–?190 bc, Greek mathematician, remembered for his treatise on conic sections
- application program — a computer program that is written and designed for a specific need or purpose
- appraisal interview — an interview by the manager of an employee who is being appraised
- apres moi le deluge — after me the deluge
- aristotle's lantern — a complex arrangement of muscles and calcareous teeth and plates forming an eversible organ in most echinoids, functioning in mastication.
- armillaria root rot — a widespread rot caused by the honey mushroom, Armillariella mellea, seriously damaging to the roots of various hardwoods, conifers, and other trees.
- 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 climbing — the sport of climbing an artificially constructed, rocklike wall by means of footholds and handholds and, typically, a belaying device.
- artificial daylight — artificial light having approximately the same spectral characteristics as natural daylight
- artificial language — an invented language, esp one intended as an international medium of communication or for use with computers
- assistant librarian — a person who assists a librarian in their work or who is not yet fully qualified as a librarian
- assistant principal — a person who assists a principal in their work
- astra digital radio — (audio) Digital Radio over satellite, compatible with analog television transmissions. Alternatively the normal TV subcarriers can be modulated by a MPEG-1 Layer-2 48 kHz 192 kbps signal. Quality is better than analog carriers and only needs half the bandwidth (analog stereo = 2 carrier, digital stereo = 1 carrier). Quality is limited and the data rate can't be increased.
- atrial fibrillation — a local and uncontrollable twitching of muscle fibres that results in rapid and irregular heart and pulse rate
- auricular appendage — auricle (def 1b).
- auricular-appendage — Anatomy. the projecting outer portion of the ear; pinna. Also called auricular appendage. an ear-shaped appendage projecting from each atrium of the heart. (loosely) the atrium.
- auriculoventricular — atrioventricular.
- australian fan palm — a fan palm, Livistona australis, of Australia, having a slender, reddish-brown trunk, spiny leafstalks, and round fruit.
- 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.
- autotransplantation — autograft.
- ave regina coelorum — a Latin hymn in honor of the Virgin Mary as Queen of Heaven.
- bachelor of science — A Bachelor of Science is a first degree in a science subject. In British English, it can also mean a person with that degree. The abbreviation BSc or , BSc is also used.
- bacillary dysentery — shigellosis.
- backward compatible — backward compatibility
- bacteriochlorophyll — a pale blue-gray form of chlorophyll that is unique to the photosynthetic but anaerobic purple bacteria.
- baja california sur — a state of NW Mexico, in the S part of the Lower California peninsula. Capital: La Paz. Pop: 423 516 (2000). Area: 73 475 sq km (28 363 sq miles)
- balfour declaration — the statement made by Arthur Balfour in 1917 of British support for the setting up of a national home for the Jews in Palestine, provided that the rights of "existing non-Jewish communities" in Palestine could be safeguarded
- ballistocardiograph — an instrument that records the slight recoil of the body, while on a special bed, caused by the contractions of the heart: used to measure cardiac pumping power and the elasticity of the aorta
- banff national park — a national reserve, 2585 sq. mi. (6695 sq. km), in the Rocky Mountains, in SW Alberta, Canada.
- bank reconciliation — A bank reconciliation is the process of adjusting a bank statement to show transactions that have occurred since the date of issue, or a document showing this.
- baudotbetical order — (algorithm) /baw do bet' i k*l/ Sorted into an order where numerics and special characters are intermixed by sorting a 5-bit Baudot code file ignoring the numeric shift and unshift codes.
- behavioral genetics — an interdisciplinary field studying the effects of genetics and hereditary factors on animal and human behavior.
- behavioral medicine — an interdisciplinary field that uses the concepts and techniques of the behavioral sciences to improve physical and emotional health.
- behavioural science — the application of scientific methods to the study of the behaviour of organisms
- belgian east africa — a former Belgian trust territory in Africa, also (1924–62) Ruanda-Urundi, now the independent countries of Rwanda and Burundi.
- betamethyl acrolein — crotonaldehyde.
- bi-lateral symmetry — a basic body plan in which the left and right sides of the organism can be divided into approximate mirror images of each other along the midline.