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23-letter words containing a, e, r, o, l

  • characteristic velocity — a measure of the effectiveness with which the combustion in a rocket engine produces high temperature and pressure, equal to the exhaust velocity divided by the thrust coefficient.
  • civil aeronautics board — the former federal agency (1938–85) that regulated airline fares and assigned routes. Abbreviation: CAB, C.A.B.
  • collision damage waiver — a form of optional collision insurance cover for a vehicle that is being rented
  • columbus air force base — U.S. Air Force installation in NE Mississippi, NW of Columbus.
  • combinatorial chemistry — the use of chemical methods to generate all possible combinations of chemicals
  • come hell or high water — If you say that you will do something come hell or high water, you are emphasizing that you are determined to do it, in spite of the difficulties involved.
  • commercial exploitation — unethical business practices
  • common lisp in parallel — (language, parallel)   (CLIP) A version of Common LISP from Allegro for the Sequent Symmetry.
  • communist international — Third International.
  • communist-international — an international organization (1919–43), founded in Moscow, uniting Communist groups of various countries and advocating the attainment of their ends by violent revolution. Also called Comintern, Communist International. Compare international (def 6).
  • community health centre — a medical centre that serves a particular area
  • compact disc recordable — (storage)   (CD-R) A write-once version of CD-ROM. CD-Rs can hold about 650 megabytes of data. They are very durable and can be read by normal CD-ROM drives, but once data has been written it cannot be altered. Standard prerecorded CDs have their information permanently stamped into an aluminium reflecting layer. CD-R discs have a dye-based recording layer and an additional golden reflecting layer. Digital information is written to the disc by burning (forming) pits in the recording layer in a pattern corresponding to that of a conventional CD. The laser beam heats the substrate and recording layer to approximately 250 C. The recording layer melts and the substrate expands into the space that becomes available. See also CD-RW and DVD-RAM.
  • compact disc rewritable — (storage)   (CD-RW) A rewritable version of CD-ROM. A CD-RW drive can write about 650 megabytes of data to CD-RW media an unlimited number of times. Most CD-RW drives can also write once to CD-R media. CD-RW media cannot be read by CD-ROM drives built prior to 1997 due to the reduced reflectivity (15% compared to 70%) of CD-RW media. CD-RW drives and media are currently (1999) more expensive than CD-R drives and media. CD-R is sometimes considered a better technology for archival purposes as the data cannot be accidentally modified or tampered with, and encourages better archival practices. Standard prerecorded CDs have their information permanently stamped into an aluminium reflecting layer. CD-WR discs have a phase-change recording layer and an additional silver (aluminium) reflecting layer. A laser beam can melt crystals in the recording layer into a non-crystalline amorphous phase or anneal them slowly at a lower temperature back to the crystalline state. The different reflectance of the areas make them appear as the 'pits' and 'lands' of a standard CD. See also CD-R and DVD-RAM.
  • comparative linguistics — the study of the correspondences between languages that have a common origin.
  • completely normal space — a normal topological space in which every subspace is normal.
  • composite colour signal — a colour television signal in which luminance and two chrominance components are encoded into a single signal
  • computer-aided learning — Computer-Aided Instruction
  • conditional convergence — the property of an infinite series that converges while the series formed by replacing each term in the given series with its absolute value diverges; the property of an infinite series that converges when the order of the terms is altered. Compare absolute convergence (def 1).
  • conjunctive normal form — (logic)   (CNF) A logical formula consisting of a conjunction of disjunctions of terms where no disjunction contains a conjunction. Such a formula might also be described as a product of sums. E.g. the CNF of (A and B) or C is (A or C) and (B or C). Contrast Disjunctive Normal Form.
  • conservative evaluation — (programming)   Under this parallel evaluation strategy, no evaluation is started unless it is known to be needed. The opposite of conservative evaluation is speculative evaluation.
  • consolidated deliveries — deliveries of goods to different shops in a common location by a single carrier and in a single vehicle
  • cordillera de talamanca — a mountain range running SE from central Costa Rica to W Panama.
  • correlation coefficient — a statistic measuring the degree of correlation between two variables as by dividing their covariance by the square root of the product of their variances. The closer the correlation coefficient is to 1 or –1 the greater the correlation; if it is random, the coefficient is zero
  • correlative conjunction — either member of a matched pair of words, of which the second is a coordinating conjunction, as either … or, neither … nor, both … and, or not only … but.
  • cost-of-living increase — a pay rise that is given because the cost of living has gone up
  • criminal records bureau — (in England and Wales) a service offering employers and voluntary organizations access to police, health, and education records
  • cryptococcal meningitis — a form of meningitis resulting from opportunistic infection by a cryptococcus fungus, occurring in persons who are immunodeficient.
  • cylindrical coordinates — three coordinates defining the location of a point in three-dimensional space in terms of its polar coordinates (r, θ) in one plane, usually the (x, y) plane, and its perpendicular distance, z, measured from this plane
  • d'arsonval galvanometer — a galvanometer consisting of a large, fixed magnet and a light coil that swings in the magnetic field.
  • dark-field illumination — illumination of the field of a microscope from the side so that the specimen is viewed against a dark background
  • de-compartmentalization — to divide into categories or compartments.
  • delayed stress reaction — a post-traumatic stress disorder occurring more than six months after the experience of a traumatic event.
  • diamondback rattlesnake — either of two large, highly venomous rattlesnakes of the genus Crotalus, having diamond-shaped markings on the back.
  • dichlorodifluoromethane — a colourless nonflammable gas easily liquefied by pressure: used as a propellant in aerosols and fire extinguishers and as a refrigerant. Formula: CCl2F2
  • differentiable manifold — a manifold having the property that any two overlapping open sets are homeomorphic to locally Euclidean spaces whose coordinates are related by differentiable functions, a property with wide applications in mathematical physics and differential geometry.
  • differential compaction — differences in the extent to which sediment is compacted owing to topographic irregularities of the surface on which it is deposited.
  • differential psychology — the branch of psychology dealing with the study of characteristic differences or variations of groups or individuals, especially through the use of analytic techniques and statistical methods.
  • digital subscriber loop — Digital Subscriber Line
  • dionysius of alexandria — ("the Great") a.d. c190–265, patriarch of Alexandria 247?–265?.
  • direct primary election — a preliminary election at which candidates for public office are chosen by direct vote of the people instead of by delegates at a convention: in closed primary elections voters must declare party affiliation and may vote only for candidates of their party
  • discrimination learning — a learning process in which an organism learns to react differently to different stimuli
  • dishonourable discharge — dismissal from the US armed forces by a court martial as a result of serious misconduct
  • disjunctive normal form — (DNF) A logical formula consisting of a disjunction of conjunctions where no conjunction contains a disjunction. E.g. the DNF of (A or B) and C is (A and C) or (B and C).
  • dissociate oneself from — to deny or repudiate any connection with
  • dollar (cost) averaging — see average (sense 11)
  • drop into someone's lap — to cause to be someone's responsibility
  • dual sensory impairment — the condition of being affected by sight and hearing loss
  • eastern lowland gorilla — the largest of the anthropoid apes, Gorilla gorilla, terrestrial and vegetarian, of western equatorial Africa and the Kivu highlands, comprising the subspecies G. g. gorilla (western lowland gorilla) G. g. graueri (eastern lowland gorilla) and G. g. beringei (mountain gorilla) now rare.
  • electroencephalographer — A specialist in electroencephalography.
  • electroencephalographic — Of or pertaining to electroencephalography or electroencephalographs.
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