14-letter words containing a, t, r, b
- lead carbonate — a white crystalline compound, PbCO 3 , toxic when inhaled, insoluble in water and alcohol: used as an exterior paint pigment.
- leaf butterfly — any of various butterflies of the genus Kallima, of southern Asia, the East Indies, and Australia, having wings that resemble dead leaves.
- leafcutter bee — any of various solitary bees of the genus Megachile that nest in soil or rotten wood, constructing the cells in which they lay their eggs from pieces of leaf
- learn by heart — memorize
- lee's birthday — Jan. 19, Robert E. Lee's birthday, a legal holiday in several Southern states
- left-branching — (of a grammatical construction) characterized by greater structural complexity in the position preceding the head, as the phrase my brother's friend's house; having most of the constituents on the left in a tree diagram (opposed to right-branching).
- lethal chamber — a room or enclosure where animals may be killed by exposure to a poison gas.
- liberalisation — (British) alternative spelling of liberalization.
- liberalization — (US) The process or act of making more liberal.
- libertarianism — a person who advocates liberty, especially with regard to thought or conduct.
- liberty bailey — Liberty Hyde, 1858–1954, U.S. botanist, horticulturist, and writer.
- liberty island — a small island in upper New York Bay: site of the Statue of Liberty.
- library ticket — a ticket admitting a person access to a library, esp a reference library
- lombard street — a street in London, England: a financial center.
- lord baltimore — David, born 1938, U.S. microbiologist: Nobel Prize in Medicine 1975.
- macrobiologist — One who studies macrobiology.
- mandelbrot set — (mathematics, graphics) (After its discoverer, Benoit Mandelbrot) The set of all complex numbers c such that | z[N] | < 2 for arbitrarily large values of N, where z[0] = 0 z[n+1] = z[n]^2 + c The Mandelbrot set is usually displayed as an Argand diagram, giving each point a colour which depends on the largest N for which | z[N] | < 2, up to some maximum N which is used for the points in the set (for which N is infinite). These points are traditionally coloured black. The Mandelbrot set is the best known example of a fractal - it includes smaller versions of itself which can be explored to arbitrary levels of detail.
- manufacturable — the making of goods or wares by manual labor or by machinery, especially on a large scale: the manufacture of television sets.
- margaret brent — Margaret, 1600?–1671? U.S. colonial landowner, born in England: regarded as an early feminist.
- marketableness — The state or quality of being marketable.
- master bedroom — a principal bedroom in a house or apartment, usually the largest, typically occupied by the person or persons who head the household.
- master builder — a play (1892) by Ibsen.
- master butcher — a butcher who is fully qualified to practise his trade and to train others in it
- matteo bojardo — Matteo Maria [mah-tey-oh muh-ree-uh;; Italian maht-te-aw mah-ree-ah] /mɑˈteɪ oʊ məˈri ə;; Italian mɑtˈtɛ ɔ mɑˈri ɑ/ (Show IPA), Boiardo, Matteo Maria.
- megakaryoblast — a cell that gives rise to a megakaryocyte.
- megavertebrate — a very big vertebrate, such as a rhinoceros
- melton mowbray — a town in central England, in Leicestershire: pork pies and Stilton cheese. Pop: 25 554 (2001)
- memorabilities — Plural form of memorability.
- metabolic rate — the rate at which living organisms expend energy or convert energy into food
- military brush — one of a pair of matched hairbrushes having no handles, especially for men and boys.
- mirabile dictu — wonderful to relate; amazing to say
- misattribution — the act of attributing; ascription.
- mistranscribed — to make a written copy, especially a typewritten copy, of (dictated material, notes taken during a lecture, or other spoken material).
- molded breadth — the extreme breadth of the framing of a vessel, excluding the thickness of the plating or planking.
- morale booster — You can refer to something that makes people feel more confident and cheerful as a morale booster.
- morbid anatomy — the branch of medical science concerned with the study of the structure of diseased organs and tissues
- morbidity rate — a measure of the relative incidence of a particular disease in a specific locality
- morse alphabet — the set of symbols used to represent letters in Morse code
- mother hubbard — a full, loose gown, usually fitted at the shoulders, worn by women.
- multibarrelled — (of a gun) having more than one barrel
- multichambered — comprising or involving several chambers
- multivibrators — Plural form of multivibrator.
- myofibroblasts — Plural form of myofibroblast.
- myrtle warbler — a common North American wood warbler, Dendroica coronata, having yellow spots on the rump, crown, and sides, including a white-throated eastern subspecies (myrtle warbler) and a yellow-throated western subspecies (Audubon's warbler)
- natural bridge — a natural limestone bridge in western Virginia. 215 feet (66 meters) high; 90 feet (27 meters) span.
- natural number — a positive integer or zero.
- natural rubber — rubber1 (def 1).
- navigation bar — (web) (Always abbreviated "nav bar") On a website, a prominently displayed set of links to important sections of the site.
- nephroblastoma — a malignant tumour arising from the embryonic kidney that occurs in young children, esp in the age range 3–8 years
- neuroblastomas — Plural form of neuroblastoma.