15-letter words containing o, m, i, t, s
- a moot question — something having no practical relevance; an academic question
- acclimatisation — Alternative spelling of acclimatization.
- accomplishments — Plural form of accomplishment.
- 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.
- actinochemistry — the branch of chemistry dealing with actinism; photochemistry.
- adenoidectomies — Plural form of adenoidectomy.
- administrations — Plural form of administration.
- admiralty house — the official residence of the Governor General of Australia, in Sydney
- adrenalectomies — Plural form of adrenalectomy.
- aerodynamicists — Plural form of aerodynamicist.
- aerotitis media — temporary deafness and pain arising from traumatic inflammation of the middle ear, caused by a rapid change in barometric pressure, as a rise in ambient cabin pressure in an aircraft descending from high altitude for landing.
- altai mountains — a mountain system of central Asia, in W Mongolia, W China, and S Russia. Highest peak: Belukha, 4506 m (14 783 ft)
- aluminosilicate — a silicate in which some of the silicon in the tetrahedral unit SiO4 has been replaced by aluminium
- ambrosia beetle — any of various small beetles of the genera Anisandrus, Xyleborus, etc, that bore tunnels into solid wood, feeding on fungi growing in the tunnels: family Scolytidae (bark beetles)
- ambrosian chant — the liturgical chant, established by Saint Ambrose, characterized by ornamented, often antiphonal, singing.
- amenity society — a voluntary society established with the purpose of preserving historic art and architecture
- american smooth — a style of competitive ballroom dancing which incorporates elements of Latin dance
- americanologist — a foreign expert or specialist in American cultural or political matters: a leading Americanologist in the Kremlin.
- ancylostomiasis — infestation of the human intestine with blood-sucking hookworms, causing progressive anaemia
- ankylostomiasis — ancylostomiasis
- annihilationism — the teaching or principle that trespassers and evildoers are completely destroyed rather than made to suffer in hell after death
- anomalistically — In an anomalistic manner; with irregularity.
- 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.
- anti-conformist — a person who conforms, especially unquestioningly, to the usual practices or standards of a group, society, etc.
- anticolonialism — the opposition to colonialism
- antimetabolites — Plural form of antimetabolite.
- antirationalism — the opposition to rationalism
- antiremonstrant — the party that opposed the Remonstrants
- antiromanticism — the opposition to romanticism
- apophthegmatise — to speak in apophthegms
- apophthegmatist — a person who creates apophthegms
- apple macintosh — Macintosh
- approximateness — The quality of being approximate.
- aristotelianism — a philosophical tradition based on the wide-ranging belief system of Aristotle
- arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
- arrondissements — Plural form of arrondissement.
- assimilationism — the theory of promoting the incorporation and mixing of different groups in society
- assimilationist — a person who favours and promotes the incorporation and mixing of different groups in society
- astrodynamicist — a person who studies astrodynamics
- atlantic salmon — a valuable food and game fish, Salmo salar, mainly of northern coastal Atlantic waters or, when spawning, in freshwater streams tributary to the ocean.
- atlas mountains — a mountain system of N Africa, between the Mediterranean and the Sahara. Highest peak: Mount Toubkal, 4165 m (13 664 ft)
- atmospherically — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
- autocannibalism — The eating of part of one's own body.
- autodidacticism — any self-directed learning or self-education
- automatic focus — a system in a camera which automatically adjusts the lens so that the object being photographed is in focus, often one using infrared light to estimate the distance of the object from the camera
- 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.
- barry mountains — a mountain range in SE Australia, in E Victoria: part of the Australian Alps
- basidiomycetous — belonging or pertaining to the basidiomycetes.
- bathing costume — A bathing costume is a piece of clothing that is worn for swimming, especially by women and girls.
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