15-letter words containing a, c, t, i
- a case in point — If you say that something is a case in point, you mean that it is a good example of something you have just mentioned.
- a straight face — If you manage to keep a straight face, you manage to look serious, although you want to laugh.
- ab urbe condita — from the founding of the city (Rome, about 753 b.c.). Abbreviation: A.U.C.
- abiogenetically — in an abiogenetic manner
- abortion clinic — a place where abortions are conducted legally by doctors
- acanthus family — the plant family Acanthaceae, typified by tropical herbaceous plants and shrubs having simple opposite leaves, clusters of tubular bracted flowers, and seeds sometimes dispersed by exploding fruit, including the acanthus, caricature, and shrimp plant.
- accelerationist — a person, especially an economist, who advocates or promotes the acceleration principle.
- accepting house — a financial institution that guarantees a bill of exchange, as a result of which it can be discounted on more favourable terms
- accessibilities — Plural form of accessibility.
- accessorization — to fit or equip with accessories: to accessorize a car with special seat covers.
- accessory fruit — a fruit having enlarged accessory structures in addition to those formed from the ovary, as the strawberry, in which the fleshy tissue is the enlarged receptacle and the true fruits are the small, dry achenes borne on its surface
- acclimatisation — Alternative spelling of acclimatization.
- acclimatization — The act of acclimatizing; the process of inuring to a new climate, or the state of being so inured.
- accommodatingly — In an accommodating manner.
- accommodational — relating to accommodation
- accomplishments — Plural form of accomplishment.
- accordion pleat — one of a series of narrow, evenly spaced parallel pleats with alternating raised and recessed folds set into cloth or other material, usually by a commercial pleating machine.
- accounting file — (operating system) A file which holds records of the resources used by individual jobs. These records are used to regulate, and calculate charges for, resources. An entry is opened in the accounting file as each job begins.
- acculturational — relating to acculturation
- ace in the hole — Something that is an ace in the hole is an advantage which you have over an opponent or rival, and which you can use if necessary.
- acetophenetidin — phenacetin
- acetyl chloride — a colourless pungent liquid used as an acetylating agent. Formula: CH3COCl
- acetylsalicylic — as in acetylsalicylic acid, aspirin
- achieved status — the social position a person gains as a result of personal effort.
- achievement age — the age at which a child should be able to perform a standardized test successfully
- achilles tendon — Your Achilles tendon or your Achilles is the tendon inside the back of your leg just above your heel.
- achromatic lens — a system of two or more lenses that is substantially free from chromatic aberration and in which the lenses are made of different substances so that the focal length of the system is the same for two or three wavelengths of light.
- achromatophilia — the property of having little or no affinity for stains.
- acid test ratio — a ratio of cash, receivables, and marketable securities to current liabilities, used in determining credit risks.
- acoustic guitar — an ordinary guitar, which produces its normal sound through the sounding board and is not amplified in any way
- acoustic screen — a fabric-covered, double-sided screen used in open areas such as offices to absorb noise
- acoustical tile — tile made in various sizes and textures from soft, usually fibrous, sound-absorbing material, as wood, cork, or metal, and typically applied to ceilings or walls.
- acousticophobia — Fear of noise.
- acoustoelectric — electroacoustic.
- acquisitiveness — tending or seeking to acquire and own, often greedily; eager to get wealth, possessions, etc.: our acquisitive impulses; acquisitive societies.
- acroanaesthesia — (pathology) Loss of sensation in the extremities.
- actinide series — a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
- actinium series — a radioactive decay series that starts with uranium-235 and ends with lead-207
- actinochemistry — the branch of chemistry dealing with actinism; photochemistry.
- actinopterygian — belonging or pertaining to the Actinopterygii, a group of bony fishes.
- action painting — a development of abstract expressionism evolved in the 1940s, characterized by broad vigorous brush strokes and accidental effects of thrown, smeared, dripped, or spattered paint
- action reporter — a news reporter who reports to the public on matters of special interest to the consumer.
- action stations — the positions taken up by individuals in preparation for or during a battle
- active hydrogen — hydrogen in the form of single atoms, rather than molecules, which makes it extremely reactive.
- active immunity — immunity (to a disease) due to the production of antibodies by the body
- activity method — a type of teaching in which students acquire knowledge and understanding by participating in a set of specially designed activities, rather than by passively listening to a teacher
- activity series — a table of metals, listed in the order of their ability to replace other metals while in solution
- acute bisectrix — See under bisectrix (def 1).
- acyclic terpene — (originally) any of a class of monocyclic hydrocarbons of the formula C 10 H 16 , obtained from plants.
- adaptive optics — a technique used to increase the resolution of a ground-based astronomical telescope by counteracting the effects of the atmosphere on the image. A deforming mirror in the light path of the telescope maintains a pointlike image of the celestial body using either a real star or a laser beam as a reference
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