19-letter words containing d, e, a, l, o
- lay down one's arms — to stop fighting; surrender
- lead someone astray — If someone or something leads you astray, they make you believe something that is not true, causing you to make a wrong decision.
- leading coefficient — the coefficient of the term of highest degree in a given polynomial. 5 is the leading coefficient in 5 x 3 + 3 x 2 − 2 x + 1.
- lean over backwards — to make a special effort, esp in order to please
- leave the door open — a movable, usually solid, barrier for opening and closing an entranceway, cupboard, cabinet, or the like, commonly turning on hinges or sliding in grooves.
- let one's hair down — any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus.
- liaodong pensinsula — a peninsula of NE China, in S Manchuria extending south into the Yellow Sea: forms the S part of Liaoning province
- like a dog's dinner — dressed smartly or ostentatiously
- line of demarcation — a separation between things deemed to be distinct
- lipopolysaccharides — Plural form of lipopolysaccharide.
- load-bearing printf — (programming, humour) The kind of bug present in a program which works correctly when producing debug output but fails when the debugging is turned off. The expression combines load-bearing wall and printf as used in debugging by printf.
- lord baltimore cake — a yellow layer cake, using only the yolks of eggs and having a fruit-nut filling consisting of pecans, almonds, maraschino cherries, and macaroon crumbs.
- lucia di lammermoor — an opera (1835) by Gaetano Donizetti, based on Sir Walter Scott's novel The Bride of Lammermoor.
- maestro di cappella — a person in charge of an orchestra, esp a private one attached to the palace of a prince in Italy during the baroque period
- malicious falsehood — a lie told by someone who knows the lie is false or knows it will do harm to the person it is concerning
- mary mcleod bethune — Mary McLeod [muh-kloud] /məˈklaʊd/ (Show IPA), 1875–1955, U.S. educator and civil-rights leader.
- medical examination — physical examination
- melodic minor scale — minor scale (def 2).
- mendel's second law — the principle, originated by Gregor Mendel, stating that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together.
- meter-candle-second — a unit of light-exposure equivalent to one lux for one second.
- middle palaeolithic — the period between the Lower and the Upper Palaeolithic, usually taken as equivalent to the Mousterian
- midnight regulation — a rule or directive approved by the federal government near the end of a president’s term of office
- mohammed ali jinnah — Mohammed Ali ("Quaid-i-Azam") 1876–1948, Muslim leader in India: first governor general of Pakistan 1947–48.
- mordvinian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
- moses-in-the-cradle — a plant, Rhoeo spathacea, native to the West Indies and Central America, having leaves with purple undersides and white flowers enclosed in a boat-shaped envelope formed by two bracts.
- mount desert island — an island off the coast of E central Maine: summer resort; forms part of Acadia National Park. 14 miles (23 km) long; 8 miles (13 km) wide.
- mousseline de laine — a thin worsted fabric, often having a printed pattern.
- mucopolysaccharides — Plural form of mucopolysaccharide.
- multidimensionality — The property of being multidimensional.
- non-confidentiality — spoken, written, acted on, etc., in strict privacy or secrecy; secret: a confidential remark.
- non-distinguishable — to mark off as different (often followed by from or by): He was distinguished from the other boys by his height.
- nordrhein-westfalen — German name of North Rhine-Westphalia.
- norfolk island pine — a coniferous evergreen tree, Araucaria heterophylla (or A. excelsa), having whorled branches and needlelike foliage, widely cultivated as a houseplant.
- novell data systems — (company) A small computer hardware company building CP/M Z80-based systems. They later went on to become Novell, Inc. and develop Novell Netware.
- oak-leaved geranium — a geranium, Pelargonium quercifolium, of southern Africa, having oaklike leaves with purple veins and sparse clusters of purple flowers with darker markings.
- old english pattern — a spoon pattern having a stem curving backward at the end.
- old man and the sea — a novel (1952) by Ernest Hemingway.
- olive-backed thrush — Swainson's thrush.
- on pins and needles — a tingly, prickly sensation in a limb that is recovering from numbness.
- open the floodgates — If events open the floodgates to something, they make it possible for that thing to happen much more often or much more seriously than before.
- optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- optical mark reader — (hardware) (OMR) A special scanning device that can read carefully placed pencil marks on specially designed documents. OMR is frequenty used in forms, questionnaires, and answer-sheets.
- over-commercialized — to make commercial in character, methods, or spirit.
- overplay one's hand — If you say that someone is overplaying something such as a problem, you mean that they are making it seem more important than it really is.
- own flesh and blood — If you say that someone is your own flesh and blood, you are emphasizing that they are a member of your family.
- oxidation potential — (in a galvanic cell) the potential of the electrode at which oxidation occurs.
- paradichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
- particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
- patrol torpedo boat — PT boat.
- periodontal disease — any of various mixed bacterial infections that affect the soft tissues and bones supporting the teeth.