15-letter words containing a, d, p, t
- absorption band — a dark band in the absorption spectrum of a substance, corresponding to a range of wavelengths for which the substance absorbs more strongly than at adjacent wavelengths.
- absorption edge — a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x-rays being absorbed, representing the minimum energy necessary to free electrons from particular shells of the atoms of the substance.
- accepted masons — a member of a widely distributed secret order (Free and Accepted Masons) having for its object mutual assistance and the promotion of brotherly love among its members.
- 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.
- acetophenetidin — phenacetin
- 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
- adjective group — An adjective group or adjectival group is a group of words based on an adjective, such as 'very nice' or 'interested in football'. An adjective group can also consist simply of an adjective.
- adoption agency — an agency that matches children needing adoption with people willing to adopt
- adoption papers — documentation relating to the adoption of a particular child
- adrenoreceptors — Plural form of adrenoreceptor.
- advance payment — a sum of money paid in advance as a part or the whole of the sum due
- advocate depute — a Scottish law officer with the functions of public prosecutor
- algaroth powder — antimony oxychloride.
- allotetraploidy — the condition of being an allotetraploid
- alpha radiation — alpha particles emitted from a radioactive isotope
- ammunition dump — a place where ammunition is left
- amphiarthrodial — a joint permitting only slight motion, as that between the vertebrae.
- anti-depressant — An anti-depressant is a drug which is used to treat people who are suffering from depression.
- anti-productive — having the power of producing; generative; creative: a productive effort.
- antiaphrodisiac — something that represses sexual desire
- anticardiolipin — (medicine, immunology) Directed against cardiolipin.
- antidepressants — of or relating to a substance that is used in the treatment of mood disorders, as characterized by various manic or depressive affects.
- antidevelopment — (of a group) opposed to development
- aphrodite terra — a large plateau region that stretches approximately halfway around the middle latitude of Venus.
- apollo asteroid — one of a number of asteroids whose orbits cross that of the earth.
- apostles' creed — a concise statement of Christian beliefs dating from about 500 ad, traditionally ascribed to the Apostles
- arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
- armaments depot — a store for armaments
- audio equipment — electrical devices used to play or record sound
- autoradiographs — Plural form of autoradiograph.
- autoradiography — the technique or process of making autoradiographs.
- autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
- bandpass filter — A bandpass filter is a filter designed to pass all frequencies within a band of frequencies.
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- banking product — one of the various services offered by a bank to its customers: mortgages, loans, insurance etc
- beyond the pale — If you think that someone's actions or behaviour are not acceptable, you can say that they are beyond the pale.
- birch partridge — ruffed grouse
- bit-mapped font — a computer font whose characters are held in memory as series of dots.
- bitmapped image — a computer image that is held in memory as a series of colored dots in a grid, each dot represented by one or more bits.
- bits and pieces — You can use bits and pieces or bits and bobs to refer to a collection of different things.
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- boiled potatoes — potatoes, usually peeled, cooked in boiling water
- butter spreader — a small knife with a wide, flat blade, as for spreading butter on bread or rolls.
- cabinet pudding — a steamed suet pudding containing dried fruit
- calf diphtheria — a disease of the throat in young calves caused by Fusobacterium necrophorum, resulting in breathing difficulty and a painful cough
- camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
- cardinal points — the four main points of the compass: north, south, east, and west
- cartridge paper — an uncoated type of drawing or printing paper, usually made from bleached sulphate wood pulp with an addition of esparto grass
- casters-up mode — [IBM, probably from slang belly up] Yet another synonym for "broken" or "down". Usually connotes a major failure. A system (hardware or software) which is "down" may be already being restarted before the failure is noticed, whereas one which is "casters up" is usually a good excuse to take the rest of the day off (as long as you're not responsible for fixing it).
- centipede grass — a slow-growing grass, Eremochloa ophiuroides, introduced into the U.S. from China and used for lawns in warm areas.
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