19-letter words containing d, l, t
- 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
- manned space flight — space travel in vehicles with a human crew
- mary mcleod bethune — Mary McLeod [muh-kloud] /məˈklaʊd/ (Show IPA), 1875–1955, U.S. educator and civil-rights leader.
- medical certificate — a document stating the result of a satisfactory medical examination
- medical examination — physical examination
- meter-candle-second — a unit of light-exposure equivalent to one lux for one second.
- mid-autumn festival — a Chinese festival that is held to celebrate the end of the summer harvest, when the crops have been gathered.
- 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
- mild silver protein — a compound of silver and a protein, applied to mucous membranes as a mild antiseptic.
- millennium meltdown — Year 2000
- missing fundamental — a tone, not present in the sound received by the ear, whose pitch is that of the difference between the two tones that are sounded
- modulus of rigidity — shear modulus.
- molybdenum trioxide — a white, crystalline, sparingly water-soluble powder, MoO 3 , used chiefly in the manufacture of molybdenum compounds.
- monoclonal antibody — antibody produced by a laboratory-grown cell clone, either of a hybridoma or a virus-transformed lymphocyte, that is more abundant and uniform than natural antibody and is able to bind specifically to a single site on almost any chosen antigen or reveal previously unknown antigen sites: used as an analytic tool in scientific research and medical diagnosis and potentially important in the treatment of certain diseases. Abbreviation: MAb.
- 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.
- multidimensionality — The property of being multidimensional.
- multimedia analysis — Multimedia analysis is the consideration of all possible risks relating to pollution and waste management.
- mutual fund company — a company that sells and manages mutual funds
- national book award — any of several awards given annually, 1949–79, to an author whose book was judged the best in its category: administered by the Association of American Publishers. Abbreviation: NBA, N.B.A.
- national coal board — a statutory corporation set up to run Britain's nationalised coal mining industry between 1947 and 1994, at which time the industry was privatized
- 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.
- normal distribution — a theoretical frequency distribution represented by a normal curve.
- 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.
- nuclear disarmament — the gradual reduction and eventual elimination of all nuclear weapons in the world
- object-oriented sql — (language) (OSQL) A functional language, a superset of SQL, used in Hewlett-Packard's OpenODB database system.
- occupational hazard — a danger or hazard to workers that is inherent in a particular occupation: Silicosis is an occupational hazard of miners.
- 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.
- old spanish customs — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
- olive-backed thrush — Swainson's thrush.
- on the threshold of — If you are on the threshold of something exciting or new, you are about to experience it.
- on top of the world — the highest or loftiest point or part of anything; apex; summit. Synonyms: zenith, acme, peak, pinnacle, vertex. Antonyms: bottom, base, foot, lowest point.
- 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.
- oxidation potential — (in a galvanic cell) the potential of the electrode at which oxidation occurs.
- parliament building — structure housing legislative offices
- particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
- patrol torpedo boat — PT boat.
- peridental membrane — periodontal membrane.
- periodontal disease — any of various mixed bacterial infections that affect the soft tissues and bones supporting the teeth.
- peritoneal dialysis — a form of dialysis in which the peritoneum is used as an autogenous semipermeable membrane
- perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
- perpetual debenture — a bond or debenture that can either never be redeemed or cannot be redeemed on demand
- phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- piggy-in-the-middle — Piggy-in-the-middle or pig-in-the-middle is a game in which two children throw a ball to each other and a child standing between them tries to catch it.