15-letter words containing a, m, i, t, o
- 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.
- bioaccumulation — the process in which industrial waste, toxic chemicals, etc. gradually accumulate in living tissue
- biomathematical — relating to biomathematics
- bit-mapped font — a computer font whose characters are held in memory as series of dots.
- bituminous coal — a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93 × 107 – 3.63 × 107 J/kg
- black guillemot — a common guillemot, Cepphus grylle: its summer plumage is black with white wing patches and its winter plumage white with greyish wings
- black mountains — a mountain range running from N Monmouthshire and SE Powys (Wales) to SW Herefordshire (England). Highest peak: Waun Fach, 811 m (2660 ft)
- 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.
- bouillotte lamp — a table lamp of the 18th century, having two or three adjustable candle brackets and a common shade sliding on a central shaft.
- bowel complaint — bowel disease or condition
- brother-in-arms — a fellow soldier or comrade in a shared struggle
- brown-tail moth — a white moth, Nygmia phaerrhoea, having a brown tuft at the end of the abdomen, the larvae of which feed on the foliage of various shade and fruit trees.
- brownian motion — the irregular motion of small particles suspended in a liquid or a gas, caused by the bombardment of the particles by molecules of the medium: first observed by Robert Brown in 1827.
- cadmean victory — a victory won with great losses to the victors
- caffe macchiato — a hot beverage consisting of espresso and a small amount of foamed milk.
- cairngorm-stone — smoky quartz.
- calamine lotion — a soothing lotion containing calamine
- calcium oxalate — a white, crystalline powder, CaC 2 O 4 , insoluble in water, used in making oxalic acid.
- camelot library — (library)
- campaign button — a disk-shaped pin worn by a supporter of a political candidate, usually bearing the name of the candidate and often a slogan or the candidate's picture.
- camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
- capitulationism — advocacy or approval of capitulation.
- casement-window — a window sash opening on hinges that are generally attached to the upright side of its frame.
- castanospermine — a substance obtained from the Australian chestnut or black bean tree
- castrametations — Plural form of castrametation.
- cat-o'-mountain — catamountain
- chamois leather — soft cleaning cloth
- chartophylacium — (in a medieval church) a place for the keeping of records and documents.
- chemical toilet — a toilet in which waste is treated with chemicals
- chemopsychiatry — the study and application of chemical substances in psychiatry
- chemosterilants — Plural form of chemosterilant.
- chemotaxonomist — a specialist in the field of chemotaxonomy
- chimney-pot hat — a high silk hat; top hat.
- cholesterolemia — the presence of an abnormal amount of cholesterol in the blood.
- 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
- chromatographic — (analytical chemistry) Of or pertaining to chromatography.
- chromic acetate — a grayish-green, water-soluble powder, Cr(C 2 H 3 O 2) 3 ⋅H 2 O, used chiefly as a mordant in dyeing and printing textiles.
- chromium-plated — having been plated with chromium
- cigarette smoke — the acrid smoke produced by cigarettes being smoked
- cinematographed — a motion-picture projector.
- cinematographer — A cinematographer is a person who decides what filming techniques should be used during the shooting of a film.
- cinematographic — a motion-picture projector.
- circumnavigator — A person who circumnavigates; that is, sails around the world.
- circumvallation — surrounded by or as if by a rampart.
- city councilman — a member of a city council
- cleistogamously — in a cleistogamous manner