17-letter words containing r, a, c, i
- hydrochloric acid — a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes.
- hydroelectrically — Using hydroelectric power.
- hydrofluoric acid — a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.
- hydrogasification — a high-temperature, high-pressure process for producing liquid or gaseous fuels from fine particles of coal and hydrogen gas
- hydrotherapeutics — hydrotherapy.
- hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
- hyperbolic spiral — rθ = a, (where a is a constant)
- hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
- hyperexcitability — an excessive reaction to stimuli.
- hyperintellectual — appealing to or engaging the intellect: intellectual pursuits.
- hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.
- hypocholesteremia — an abnormally low amount of cholesterol in the blood.
- hypochondriacally — In a hypochondriacal manner.
- iambic pentameter — a verse line consisting of five metrical iambs
- ice-cream parlour — a place where people go to eat ice cream
- ichthyosarcotoxin — a term applied to any poison found in the flesh of poisonous fishes.
- icosidodecahedron — A semiregular polyhedron with twelve faces that are regular pentagons and twenty that are equilateral triangles.
- icositetrahedrons — Plural form of icositetrahedron.
- ideogrammatically — In terms of, or by means of, ideograms.
- idiosyncratically — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
- ignoratio elenchi — the fallacy of offering proof irrelevant to the proposition in question.
- illegal procedure — a penalty assessed against the offensive team for a technical rules violation, as in assuming an illegal formation.
- illocutionary act — an act performed by a speaker by virtue of uttering certain words, as for example the acts of promising or of threatening
- image recognition — (graphics, artificial intelligence) The identification of objects in an image. This process would probably start with image processing techniques such as noise removal, followed by (low-level) feature extraction to locate lines, regions and possibly areas with certain textures. The clever bit is to interpret collections of these shapes as single objects, e.g. cars on a road, boxes on a conveyor belt or cancerous cells on a microscope slide. One reason this is an AI problem is that an object can appear very different when viewed from different angles or under different lighting. Another problem is deciding what features belong to what object and which are background or shadows etc. The human visual system performs these tasks mostly unconsciously but a computer requires skillful programming and lots of processing power to approach human performance.
- immunotherapeutic — (immunology, medicine) Of a pharmaceutical, acting on the immune system to treat disease; used in immunotherapy.
- imperialistically — In an imperialistic manner.
- impersonification — (archaic) the act of impersonating; impersonation.
- impracticableness — The state of being impracticable; impracticability.
- improper fraction — a fraction having the numerator greater than the denominator.
- in the background — behind the focus of attention
- incendiary device — a bomb that is designed to start fires
- incline one's ear — to listen favourably (to)
- inconsiderateness — without due regard for the rights or feelings of others: It was inconsiderate of him to keep us waiting.
- incremental value — increased value measured on an index or scale
- incubation period — the period between infection and the appearance of signs of a disease.
- indecipherability — Quality of being indecipherable.
- indescribableness — The quality of being indescribable.
- indian rope-trick — the supposed Indian feat of climbing an unsupported rope
- indicator diagram — a graphical or other representation of the cyclic variations of pressure and volume within the cylinder of a reciprocating engine obtained by using an indicator
- indicator species — See at indicator (def 6).
- indirect taxation — duty paid on goods or services
- induction furnace — a type of electric furnace used for melting a charge of scrap by the heat produced by its own electrical resistance.
- industrial action — job action.
- industrial school — a school for teaching one or more branches of industry; trade or vocational school.
- inertial guidance — a guidance system for an aerospace vehicle, in which self-contained devices determine the vehicle's course on the basis of the directions and magnitudes of the accelerations it undergoes in flight.
- insectivorous bat — any bat of the suborder Microchiroptera, typically having large ears and feeding on insects. The group includes common bats (Myotis species), vampire bats, etc
- inspector general — a comedy (1836) by Gogol.
- inspector-general — a comedy (1836) by Gogol.
- instance variable — (programming) In object-oriented programming, one of the variables of a class template which may have a different value for each object of that class. Instance variables hold the state of an object.
- insurance carrier — company issuing an insurance policy