15-letter words containing a, p, o, s, t, r
- 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.
- adoption papers — documentation relating to the adoption of a particular child
- adrenoreceptors — Plural form of adrenoreceptor.
- air-superiority — designating a fighter aircraft built for long patrol capability at high altitudes and supersonic speeds, with air-to-air combat as its principal mission.
- allotransplants — Plural form of allotransplant.
- altar of repose — a pedestal or niche upon which the sacraments are preserved from Maundy Thursday to Good Friday.
- angina pectoris — a sudden intense pain in the chest, often accompanied by feelings of suffocation, caused by momentary lack of adequate blood supply to the heart muscle
- anisotropically — Physics. of unequal physical properties along different axes. Compare isotropic (def 1).
- anteroposterior — Relating to or directed toward both front and back.
- anthropogenesis — the study of the origins of man
- anthropologists — Plural form of anthropologist.
- anthropometrics — the science of measuring the size and proportions of the human body (called anthropometry), especially as applied to the design of furniture and machines.
- anthropopathism — ascription of human passions or feelings to a being or beings not human, especially to a deity.
- anthropophagous — Who practices anthropophagy.
- anthropopsychic — the attribution of consciousness to divine beings and nature
- anthroposophist — A proponent of anthroposophy.
- anti-censorship — the act or practice of censoring.
- antiaphrodisiac — something that represses sexual desire
- antiprogressive — opposed to or acting against progression in society
- apartment house — a building containing a number of residential apartments.
- apolipoproteins — Plural form of apolipoprotein.
- apollo asteroid — one of a number of asteroids whose orbits cross that of the earth.
- apostle pitcher — a stoneware pitcher decorated in relief with figures of the apostles.
- apostles' creed — a concise statement of Christian beliefs dating from about 500 ad, traditionally ascribed to the Apostles
- apostolic vicar — vicar apostolic.
- apostrophically — (rhetoric) Using apostrophe; with sudden exclamatory dialogue.
- approach lights — lights on the runway that guide planes coming in to land
- appropriateness — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approximateness — The quality of being approximate.
- archiepiscopate — the rank, office, or term of office of an archbishop
- armaments depot — a store for armaments
- arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
- astrophotograph — a photograph of the heavenly bodies
- astrophotometry — the measurement of the intensity of light of celestial objects.
- astrophysically — from an astrophysical point of view
- astrophysicists — Plural form of astrophysicist.
- athletic sports — sports, esp track and field events, in which athleticism is required
- atmospherically — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
- autobiographers — Plural form of autobiographer.
- autobiographies — Plural form of autobiography.
- autoradiographs — Plural form of autoradiograph.
- autostereoscopy — The display of stereoscopic images without the use of special viewing equipment.
- autotransplants — Plural form of autotransplant.
- backup software — (tool, software) Software for doing a backup, often included as part of the operating system. Backup software should provide ways to specify what files get backed up and to where. It may include its own scheduling function to automate the procedure or, preferably, work with generic scheduling facilities. It may include facilities for managing the backup media (e.g. maintaining an index of tapes) and for restoring files from backups. Examples are Unix's dump command and Windows's ntbackup.
- bacteriophagous — Pertaining to the predation and consumption of bacterium.
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- baptism of fire — If someone who has just begun a new job has a baptism of fire, they immediately have to cope with very many severe difficulties and obstacles.
- biostratigraphy — the examination of the ages of rock strata by using fossils
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
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