19-letter words containing i, c, t
- genetic fingerprint — DNA fingerprinting.
- genetic programming — (programming) (GP) A programming technique which extends the genetic algorithm to the domain of whole computer programs. In GP, populations of programs are genetically bred to solve problems. Genetic programming can solve problems of system identification, classification, control, robotics, optimisation, game playing, and pattern recognition. Starting with a primordial ooze of hundreds or thousands of randomly created programs composed of functions and terminals appropriate to the problem, the population is progressively evolved over a series of generations by applying the operations of Darwinian fitness proportionate reproduction and crossover (sexual recombination).
- geocentric parallax — the apparent displacement of an observed object due to a change in the position of the observer.
- geomagnetic equator — an imaginary line on the earth's surface, the plane of which passes through the center and is midway between the geomagnetic poles.
- geometric isomerism — each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in cis- and trans- configurations.
- gestational carrier — surrogate mother (def 3).
- gigabits per second — (unit) (Gbps) A unit of information transfer rate equal to one billion bits per second. Note that, while a gigabit is defined as a power of two (2^30 bits), a gigabit per second is defined as a power of ten (10^9 bits per second, which is slightly less) than 2^30).
- give one credit for — to commend one for
- glacial acetic acid — acetic acid of at least 99.5 percent concentration, solidifying at 16.7°C.
- glottalic airstream — a current of air in the pharynx produced by the action of the glottis.
- glottochronological — Of or pertaining to glottochronology.
- glyceryl trinitrate — nitroglycerin.
- go to rack and ruin — If you say that a place is going to rack and ruin, you are emphasizing that it is slowly becoming less attractive or less pleasant because no-one is bothering to look after it.
- goods received note — a document created by a buyer on receipt of merchandise and which describes each good and details the quantity of each received
- grammatical meaning — the meaning of an inflectional morpheme or of some other syntactic device, as word order.
- grandfather's chair — wing chair.
- graphic workstation — (graphics, computer) A workstation specifically configured for graphics works such as image manipulation, bitmap graphics ("paint"), and vector graphics ("draw") type applications. Such work requires a powerful CPU and a high resolution display. A graphic workstation is very similar to a CAD workstation and, given the typical specifications of personal computers currently available in 1999, the distinctions are very blurred and are more likely to depend on availability of specific software than any detailed hardware requirements.
- gratuitous contract — a contract for the benefit of only one of the parties, the other party receiving nothing as consideration.
- great wall of china — a system of fortified walls with a roadway along the top, constructed as a defense for China against the nomads of the regions that are now Mongolia and Manchuria: completed in the 3rd century b.c., but later repeatedly modified and rebuilt. 2000 miles (3220 km) long.
- great-grandchildren — a grandchild of one's son or daughter.
- greenstick fracture — an incomplete fracture of a long bone, in which one side is broken and the other side is still intact.
- greenwich mean time — the time as measured on the prime meridian running through Greenwich, England: used in England and as a standard of calculation elsewhere.
- gregorian telescope — a telescope similar in design to the Cassegrainian telescope but less widely used.
- grievance committee — a group of representatives chosen from a labor union or from both labor and management to consider and remedy workers' grievances.
- gulf of carpentaria — a shallow inlet of the Arafura Sea, in N Australia between Arnhem Land and Cape York Peninsula
- half wave rectifier — A half wave rectifier removes the negative component of an alternating signal leaving only the positive part.
- half-wave rectifier — a rectifier that changes only one half of a cycle of alternating current into a pulsating, direct current.
- halt and catch fire — (humour, processor) (HCF) Any of several undocumented and semi-mythical machine instructions with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the IBM 360. The Motorola 6800 microprocessor was the first for which an HCF opcode became widely known. This instruction caused the processor to read every memory location sequentially until reset.
- hang in the balance — to fasten or attach (a thing) so that it is supported only from above or at a point near its own top; suspend.
- harmonic distortion — distortion caused by nonlinear characteristics of electronic apparatus, esp of audio amplifiers, that generate unwanted harmonics of the input frequencies
- hatfield-mccoy feud — a blood feud between two mountain clans on the West Virginia–Kentucky border, the Hatfields of West Virginia and the McCoys of Kentucky, that grew out of their being on opposite sides during the Civil War and was especially violent during 1880–90.
- have a bone to pick — to have grounds for a quarrel
- heel-and-toe racing — race walking.
- hepatic portal vein — a vein connecting two capillary networks in the liver
- heptachlorobiphenyl — (organic compound) Either of twenty-four isomers of the polychlorinated biphenyl containing seven chlorine atoms.
- hermetically sealed — airtight
- hermitian conjugate — adjoint (def 2).
- hester lynch piozzi — Hester Lynch (Hester Lynch Piozzi) 1741–1821, Welsh writer and friend of Samuel Johnson.
- hick-joint pointing — pointing having raked joints filled flush with the face of the masonry with a finish mortar.
- histopathologically — In a histopathological manner.
- historic episcopate — the derivation of the episcopate of a Church in historic succession from the apostles
- historiographically — In a historiographical manner; by means of a historiography.
- holy innocents' day — December 28, a day of religious observance commemorating the slaughter of the children of Bethlehem by Herod's order.
- horizontal encoding — (processor) An instruction set where each field (a bit or group of bits) in an instruction word controls some functional unit or gate directly, as opposed to vertical encoding where instruction fields are decoded (by hard-wired logic or microcode) to produce the control signals. Horizontal encoding allows all possible combinations of control signals (and therefore operations) to be expressed as instructions whereas vertical encoding uses a shorter instruction word but can only encode those combinations of operations built into the decoding logic. An instruction set may use a mixture of horizontal and vertical encoding within each instruction. Because an architecture using horizontal encoding typically requires more instruction word bits it is sometimes known as a very long instruction word (VLIW) architecture.
- hospital facilities — the equipment and services provided by a hospital
- hotel accommodation — the facilities and the quality of accommodation provided by a hotel
- house of correction — a place for the confinement and reform of persons convicted of minor offenses and not regarded as confirmed criminals.
- housing association — A housing association is an organization which owns houses and helps its members to rent or buy them more cheaply than on the open market.
- human rights record — the facts that are known about the tendency of a country, regime, etc, to observe and protect human rights
- humanist technology — (philosophy) Technology centered around the interests, needs, and well-being of humans.