12-letter words containing o, b, t, r
- k/t boundary — Cretaceous/Tertiary boundary: the time zone comprising the end of the Cretaceous and the beginning of the Tertiary periods
- keyboardists — Plural form of keyboardist.
- kiteboarding — A sport in which participants ride a form of wakeboard or surfboard harnessed to a large kite which is controlled by the rider.
- labor market — the available supply of labor considered with reference to the demand for it.
- laboratorial — a building, part of a building, or other place equipped to conduct scientific experiments, tests, investigations, etc., or to manufacture chemicals, medicines, or the like.
- laboratorian — a building, part of a building, or other place equipped to conduct scientific experiments, tests, investigations, etc., or to manufacture chemicals, medicines, or the like.
- laboratories — a building, part of a building, or other place equipped to conduct scientific experiments, tests, investigations, etc., or to manufacture chemicals, medicines, or the like.
- labour costs — the charges incurred when employing labour; the wages, etc, paid to workers, esp those employed to do physical work
- labour party — a political party in Great Britain, formed in 1900 from various socialist and labor groups and taking its present name in 1906.
- labrador tea — a North American bog shrub, Ledum groenlandicum, of the heath family, having evergreen leaves and rounded clusters of white flowers.
- late bloomer — a person whose talents or capabilities are slow to develop: A late bloomer, she wrote her first novel when she was almost 50.
- lay store by — to value or reckon as important
- leatherbound — Bound in leather.
- lemon butter — a spread made of butter flavored with lemon
- letterboxing — Also, letter box. Chiefly British. a public or private mailbox.
- liberational — Relating to, or aiding, liberation; liberatory.
- liberty bond — a single Liberty loan bond.
- liberty loan — any of the five bond issues of the U.S. government floated in World War I.
- liberty pole — Also called liberty tree. American History. a pole or tree, often with a liberty cap or a banner at the top, usually located on a village green or in a market square, used by the Sons of Liberty in many colonial towns as a symbol of protest against British rule and around which anti-British rallies were held.
- liberum veto — a veto exercised by a single member of a legislative body whose rules require unanimity.
- light bomber — a small airplane designed to carry light bomb loads relatively short distances, especially one having a gross loaded weight of less than 100,000 pounds (45,000 kg).
- lobster moth — a large sombre-hued prominent moth, Stauropus fagi, that when at rest resembles dead leaves. The modified thoracic legs of the larva, carried curled over its body, look like a lobster's claw
- lobster roll — lobster salad served on a frankfurter roll or the like.
- lobster tail — the flesh of the tail of any of various crustaceans, esp. the Cape crawfish, prepared as food, often by broiling in the shell
- lord's table — the, communion table.
- lubrications — Plural form of lubrication.
- lucubrations — Plural form of lucubration.
- lugubriosity — mournful, dismal, or gloomy, especially in an affected, exaggerated, or unrelieved manner: lugubrious songs of lost love.
- 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.
- mantelboards — Plural form of mantelboard.
- masturbation — the stimulation or manipulation of one's own genitals, especially to orgasm; sexual self-gratification.
- masturbatory — the stimulation or manipulation of one's own genitals, especially to orgasm; sexual self-gratification.
- memorability — worth remembering; notable: a memorable speech.
- metabotropic — Describing a neurotransmitter or cell receptor whose action is mediated by metabolic functions (e.g. enzyme activation).
- microhabitat — an extremely localized, small-scale environment, as a tree stump or a dead animal.
- microtubular — Of or pertaining to microtubules.
- microtubules — Plural form of microtubule.
- mob hysteria — the heightened and extreme emotions that can be experienced by people in a large crowd
- mobius strip — a continuous, one-sided surface formed by twisting one end of a rectangular strip through 180° about the longitudinal axis of the strip and attaching this end to the other.
- montebrasite — a mineral, lithium aluminum hydroxyl phosphate, LiAlPO 4 (OH), isomorphous with amblygonite, used as an ore of lithium.
- monterey bay — an inlet of the Pacific in W California. 26 miles (42 km) long.
- mortar board — A mortar board is a stiff black cap which has a flat square top with a bunch of threads attached to it. In Britain, mortar boards are sometimes worn on formal occasions by university students and teachers. In the United States, mortar boards are worn by students at graduation ceremonies at high schools, colleges, and universities.
- mortarboards — Plural form of mortarboard.
- mother's boy — mama's boy.
- mother-to-be — A mother-to-be is a woman who is pregnant, especially for the first time.
- motherboards — Plural form of motherboard.
- motorbicycle — a small, lightweight motorcycle.
- motorboating — a boat propelled by an inboard or outboard motor.
- mount elbert — a mountain in central Colorado, in the Sawatch range. Height: 4399 m (14 431 ft)
- mount erebus — a volcano in Antarctica, on Ross Island: discovered by Sir James Ross in 1841 and named after his ship. Height: 3794 m (12 448 ft)