15-letter words containing a, m, o, r, s
- bathroom scales — scales typically kept in a bathroom for people to weigh themselves
- bear comparison — to be sufficiently similar in class or range to be compared with (something else), esp favourably
- before the mast — as an apprentice seaman
- binomial series — an infinite series obtained by expanding a binomial raised to a power that is not a positive integer.
- bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
- boston marriage — (especially in 19th-century New England) an intimate friendship between two women often maintaining a household together.
- boston massacre — an outbreak (1770) in Boston against British troops, in which a few citizens were killed
- brachystomatous — having a short proboscis, as certain insects.
- broadcast storm — (networking) A broadcast on a network that causes multiple hosts to respond by broadcasting themselves, causing the storm to grow exponentially in severity. See network meltdown.
- brother-in-arms — a fellow soldier or comrade in a shared struggle
- bulimia nervosa — a disorder characterized by compulsive overeating followed by vomiting: sometimes associated with anxiety about gaining weight
- bureau of mines — a division of the Department of the Interior, created in 1910, that studies the nation's mineral resources and inspects mines.
- cairngorm-stone — smoky quartz.
- camp counsellor — an adult supervisor assigned to a group of campers at a summer camp
- carcinosarcomas — Plural form of carcinosarcoma.
- carpometacarpus — a bone in the wing of a bird that consists of the metacarpal bones and some of the carpal bones fused together
- cassette memory — a removable magnetic tape cartridge that stores data and programs.
- castanospermine — a substance obtained from the Australian chestnut or black bean tree
- 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).
- castrametations — Plural form of castrametation.
- chamber counsel — a counsel who advises in private and does not plead in court
- chamois leather — soft cleaning cloth
- chanson d'amour — love song.
- charles coulomb — Charles Augustin de [sharl oh-gy-stan duh] /ʃarl oʊ güˈstɛ̃ də/ (Show IPA), 1736–1806, French physicist and inventor.
- charles simonyi — (person) Microsoft programmer, most famously responsible for Hungarian Notation. Simonyi was born in Budapest in 1948, and for more than a decade was senior programmer at Microsoft in Redmond.
- charm offensive — If you say that someone has launched a charm offensive, you disapprove of the fact that they are being very friendly to their opponents or people who are causing problems for them.
- chemoautotrophs — Plural form of chemoautotroph.
- chemopsychiatry — the study and application of chemical substances in psychiatry
- chemosterilants — Plural form of chemosterilant.
- cholesterolemia — the presence of an abnormal amount of cholesterol in the blood.
- chondrosarcomas — Plural form of chondrosarcoma.
- christmas carol — a joyful hymn or religious song, celebrating the birth of Christ
- chromatic scale — a twelve-note scale including all the semitones of the octave
- chromosome band — any of the transverse bands that appear on a chromosome after staining. The banding pattern is unique to each type of chromosome, allowing characterization
- cigarette smoke — the acrid smoke produced by cigarettes being smoked
- circumambagious — in a round-about manner
- circumforaneous — moving around or abroad; roaming from place to place
- college of arms — any of several institutions in the United Kingdom having a royal charter to deal with matters of heraldry, grant armorial bearings, record and trace genealogies, etc
- combat neurosis — battle fatigue.
- combat trousers — Combat trousers are large, loose trousers with lots of pockets.
- comfort station — a public lavatory and rest room
- comfortableness — (of clothing, furniture, etc.) producing or affording physical comfort, support, or ease: a comfortable chair; comfortable shoes.
- commercialising — Present participle of commercialise.
- commiseratingly — in a manner expressing commiseration
- commissionaires — Plural form of commissionaire.
- commissionnaire — Alternative form of commissionaire.
- common disaster — the death of an insured party and a beneficiary occurring at the same time in the same accident.
- communist party — (in non-Communist countries) a political party advocating Communism
- company manners — rules of politeness that people, esp children, are supposed to observe in the presence of other people
- comparativeness — of or relating to comparison.