12-letter words containing s, i, m, o, r
- ironmonger's — a shop where articles for the house and garden such as tools, nails, and pans are sold
- isochromatic — Optics. having the same color or tint.
- isodiametric — having equal diameters or axes.
- isoperimeter — a figure whose perimeter is equal to that of another.
- isoperimetry — the study of isoperimeters.
- isothermally — occurring at constant temperature.
- jameson raid — an expedition into the Transvaal in 1895 led by Sir Leander Starr Jameson (1853–1917) in an unsuccessful attempt to topple its Boer regime
- kashmir goat — one of a long-haired breed of goat raised in Tibet and the higher elevations of China, the Indian subcontinent, Afghanistan, and Turkey for its meat, milk, and cashmere wool.
- katamorphism — metamorphism at or near the earth's surface: breaks down complex minerals into simpler ones.
- keratotomies — Plural form of keratotomy.
- king-of-arms — a title of certain of the principal heralds of England and certain other kingdoms empowered by their sovereigns to grant armorial bearings.
- lachrymosity — suggestive of or tending to cause tears; mournful.
- ladies' room — a public lavatory for women.
- laparotomies — Plural form of laparotomy.
- leisure home — a house for use on weekends, vacations, or the like.
- leprosariums — Plural form of leprosarium.
- liposarcomas — Plural form of liposarcoma.
- lithospermum — any annual or perennial herbs and small shrubs of the genus lithospermum, of the borage family, native to Europe, N America, and northern Asia, and having white, blue, or yellow flowers
- livor mortis — Medicine/Medical. a bluish-purple discoloration of the skin on the dependent parts of a dead human body, caused by hypostasis, or accumulation of blood due to the action of gravity.
- logocentrism — a method of literary analysis in which words and language are regarded as a fundamental expression of external reality, excluding nonlinguistic factors such as historical context.
- long-termism — the tendency to focus attention on long-term gains
- luminiferous — producing light: the luminiferous properties of a gas.
- macassar oil — an oil derived from materials said to be obtained from Macassar, formerly used as a hairdressing.
- macro-cosmic — the great world or universe; the universe considered as a whole (opposed to microcosm).
- macrobiotics — a philosophically oriented program incorporating elements from several ancient cultures and emphasizing harmony with nature, especially through adherence to a diet consisting primarily of whole grains, beans, vegetables, and moderate amounts of seafood and fruit.
- macrocytosis — The presence of macrocytes in the blood.
- macrofossils — Plural form of macrofossil.
- macroglossia — Enlargement or hypertrophy of the tongue.
- macrophysics — the branch of physics that deals with physical objects large enough to be observed and treated directly.
- madreporites — Plural form of madreporite.
- magnitogorsk — a city in the W Russian Federation in Asia, on the Ural River, near the boundary between Europe and Asia.
- makarios iii — (Michael Christodoulos Mouskos) 1913–77, Cypriot statesman and Greek Orthodox prelate: archbishop and patriarch of Cyprus 1950–77; president 1960–77 (in exile 1974).
- make history — do sth of great significance
- make inroads — If one thing makes inroads into another, the first thing starts affecting or destroying the second.
- malapropisms — Plural form of malapropism.
- malnourished — poorly or improperly nourished; suffering from malnutrition: thin, malnourished victims of the famine.
- malversation — improper or corrupt behavior in office, especially in public office.
- manipulators — Plural form of manipulator.
- manoeuvrings — Plural form of manoeuvring.
- marcatissimo — in a heavily accented manner
- marconi mast — an elaborately stayed mast.
- marie louise — 1791–1847, 2nd wife of Napoleon I: empress of France; duchess of Parma 1816–31 (daughter of Francis II of Austria; mother of Napoleon II).
- marine corps — a branch of the U.S. Armed Forces trained for land, sea, and air combat, typically for land combat in conjunction with an amphibious or airborne landing, and whose commandant is responsible to the secretary of the navy.
- marionettist — A puppeteer who controls a marionette.
- marsh orchid — any of various orchids of the genus Dactylorhiza, growing in damp places and having mostly purplish flowers
- master point — a point awarded to a bridge player who has won or placed in an officially recognized tournament.
- mastigophora — a phylum of protozoans comprising nonphotosynthetic, chiefly free-living flagellates: some species are important pathogens of humans and other animals.
- mastigophore — Any flagellate of the phylum Mastigophora.
- masturbation — the stimulation or manipulation of one's own genitals, especially to orgasm; sexual self-gratification.
- matriclinous — Having mostly maternally-inherited characteristics.