16-letter words containing m, o, s, a, i
- atomic mass unit — a unit of mass used to express atomic and molecular weights that is equal to one twelfth of the mass of an atom of carbon-12. It is equivalent to 1.66 × 10–27 kg
- atomic physicist — a scientist specializing in atomic physics
- atomic structure — the concept of an atom as a central positively charged nucleus consisting of protons and neutrons surrounded by a number of electrons. The number of electrons is equal to the number of protons: the whole entity is thus electrically neutral
- atwood's machine — a device consisting of two unequal masses connected by a string passed over a pulley, used to illustrate the laws of motion.
- authoritarianism — Authoritarianism is the state of being authoritarian or the belief that people with power, especially the State, have the right to control other people's actions.
- automatic pistol — a type of pistol having a mechanism that throws out the empty shell, puts in a new one, and prepares the pistol to be fired again.
- axis of symmetry — Mathematics. a straight line for which every point on a given curve has corresponding to it another point such that the line connecting the two points is bisected by the given line.
- background music — music of any kind that is played while some other activity is going on, so that people do not actively attend to it
- balkan mountains — a mountain range extending across Bulgaria from the Black Sea to the eastern border. Highest peak: Mount Botev, 2376 m (7793 ft)
- baron tweedsmuir — the title of Scottish novelist John Buchan
- bartholomeu dias — Bartholomeu [bahr-too-loo-me-oo] /ˌbɑr tʊ lʊˈmɛ ʊ/ (Show IPA), c1450–1500, Portuguese navigator: discoverer of the Cape of Good Hope.
- basal metabolism — the amount of energy required by an individual in the resting state, for such functions as breathing and circulation of the blood
- basic dichromate — an orange-red, amorphous, water-insoluble powder, Bi 2 O 3 ⋅2CrO 3 , used chiefly as a pigment in paints.
- belgian malinois — one of a Belgian breed of medium-sized dogs having a short coat, tan to dark brown in color, a black mask, and erect ears, bred originally as a sheepherding dog.
- benoit samuelson — Joan (Joan Benoit) born 1957, U.S. distance runner: first Olympic marathon women's winner, 1984.
- boatswain's mate — a job classification in the US navy
- bornholm disease — an epidemic virus infection characterized by pain round the base of the chest
- boston cream pie — a cake of two layers with icing and a creamy filling
- braille embosser — Braille printer
- british columbia — a province of W Canada, on the Pacific coast: largely mountainous with extensive forests, rich mineral resources, and important fisheries. Capital: Victoria. Pop: 4 400 057 (2011 est). Area: 930 532 sq km (359 279 sq miles)
- bronchial asthma — asthma.
- brood parasitism — a type of parasitism in which a bird (brood parasite), as a cowbird or European cuckoo, lays and abandons its eggs in the nest of another species
- busman's holiday — If you have a holiday, but spend it doing something similar to your usual work, you can refer to it as a busman's holiday.
- camomile shampoo — a liquid or cream preparation of soap or detergent with camomile extract to wash the hair
- capsizing moment — the moment of an upsetting couple.
- category mistake — a sentence that says of something in one category what can only intelligibly be said of something in another, as when speaking of the mind located in space
- chemical weapons — toxic chemicals used as weapons
- chemoprophylaxis — the prevention of disease using chemical drugs
- chinese cinnamon — cassia (def 1).
- cholesterolaemia — the presence of abnormally high levels of cholesterol in the blood
- chorioamnionitis — Inflammation of the fetal membranes (amnion and chorion) due to a bacterial infection, most often associated with prolonged labour.
- christmas factor — a protein implicated in the process of blood clotting, the lack of which causes Christmas disease
- chromatographies — Plural form of chromatography.
- closing argument — In a court case, a lawyer's closing argument is their final speech, in which they give a summary of their case.
- coadministration — Joint administration.
- collaborationism — The act of collaborating, especially with an enemy.
- columbia heights — a city in SE Minnesota, near Minneapolis.
- combination last — a shoe last that has a narrower heel or instep than the standard last.
- combination shot — a shot in pool in which the cue ball strikes at least one object ball before contact is made with the ball to be pocketed.
- combination skin — facial skin that is dry in some areas and greasy in others
- commensurability — The quality of being commensurable or commensurate.
- commission agent — a person who sells goods and services for a fee
- commonsensically — sound practical judgment that is independent of specialized knowledge, training, or the like; normal native intelligence.
- communicableness — The state or quality of being communicable.
- communion sunday — any Sunday on which communion is administered.
- communitarianism — A theory or system of social organization based on small self-governing communities.
- commutation-test — the act of substituting one thing for another; substitution; exchange.
- compartmentalise — to divide into categories or compartments.
- complex analysis — the branch of mathematics dealing with analytic functions of a complex variable.
- complexity class — (algorithm) A collection of algorithms or computable functions with the same complexity.