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18-letter words containing a, e, o, l, t, r

  • lone-parent family — a family in which there is only one parent
  • lonely hearts club — a club for people who are trying to find a lover or a friend
  • look the other way — look in the opposite direction
  • loosestrife family — the plant family Lythraceae, characterized by herbaceous plants, shrubs, and trees having usually opposite or whorled, simple leaves, clusters of flowers, and fruit in the form of a capsule, and including the crape myrtle, loosestrifes of the genus Lythrum, and the henna shrub.
  • low-start mortgage — a mortgage in which interest only is repaid for a fixed period at the outset, to make it more affordable
  • lowell observatory — the astronomical observatory, situated in Flagstaff, Arizona, at which Pluto was discovered in 1930.
  • lower klamath lake — See under Klamath Lakes.
  • lower palaeolithic — the earliest of the three sections of the Palaeolithic, beginning about 3 million years ago and ending about 70 000 bc with the emergence of Neanderthal man
  • magnetocrystalline — (physics) Describing the interaction between the magnetization and the crystal structure of a material.
  • magnetoelectricity — electricity developed by the action of magnets.
  • magnetorheological — (physics) describing a substance whose rheological properties are modified by a magnetic field.
  • major tranquilizer — antipsychotic (def 2).
  • mandelbrot, benoit — Benoit Mandelbrot
  • margaret of valois — ("Queen Margot") 1533–1615, 1st wife of Henry IV of France: queen of Navarre; patron of science and literature (daughter of Henry II of France and Catherine de' Medici).
  • maternity hospital — birthing facility
  • mathematical error — a mistake in a mathematical calculation, etc
  • may flower compact — an agreement to establish a government, entered into by the Pilgrims in the cabin of the Mayflower on November 11, 1620.
  • medical dictionary — a specialized dictionary covering terms used in the health professions by doctors, nurses, and others involved in allied health care services. A dictionary with authoritative spellings and definitions is a particularly crucial resource in medicine, where a misspelling or misunderstanding can have unfortunate consequences for people under care. Print dictionaries in this field may be sorted alphabetically or may be categorized according to medical specializations or by the various systems in the body, as the immune system and the respiratory system. The online Medical Dictionary on Dictionary.com allows alphabetical browsing in the combined electronic versions of more than one authoritative medical reference, insuring access to correct spellings, as well as immediate, direct access to a known search term typed into the search box on the site: A medical dictionary reveals that large numbers of medical terms are formed from the same Latin and Greek parts combined and recombined.
  • mental reservation — an unexpressed doubt or qualification about a situation, person, etc.
  • mental retardation — Usually Offensive. a developmental disorder characterized in varying degrees by a subnormal ability to learn, a substantially low IQ, and impaired social adjustment.
  • menthol cigarettes — cigarettes that are flavoured with menthol
  • metabolic syndrome — Pathology. a group of medical conditions present simultaneously in a patient, as high blood pressure, low HDL cholesterol levels, and an excess of abdominal fat, that increases a person's risk of heart disease, stroke, and diabetes. Also called insulin resistance syndrome.
  • microencapsulation — the process of enclosing chemical substances in microcapsules.
  • microenvironmental — Pertaining to a microenvironment.
  • micrometer caliper — calipers with a micrometer screw, for extremely accurate measurement
  • micrometer-caliper — any of various devices for measuring minute distances, angles, etc., as in connection with a telescope or microscope.
  • micropalaeontology — the branch of palaeontology concerned with the study of microscopic fossils
  • middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
  • military policeman — A military policeman is a member of the military police.
  • mineralocorticoids — Plural form of mineralocorticoid.
  • minister of health — a person appointed to head the government department of health
  • minor tranquilizer — antianxiety drug.
  • moccasin telegraph — the transmission of rumour or secret information; the grapevine
  • modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
  • molecular genetics — a subdivision of genetics concerned with the structure and function of genes at the molecular level.
  • molecular spectrum — the spectrum of light emitted or absorbed by a species of molecule.
  • monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
  • monte carlo method — a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer.
  • monterosso al mare — a group of five coastal villages (Monterosso al Mare, Vernazza, Corniglia, Manarola, and Riomaggiore) on the Ligurian Sea in NW Italy, near La Spezia.
  • montgomery village — a city in central Maryland.
  • morning-after pill — a contraceptive pill containing only an estrogen and used by women within a few hours after sexual intercourse.
  • myeloproliferative — (medicine) of or pertaining to the presence of an abnormal proliferation of myelopoietic cells (from bone marrow).
  • napoleon bonaparte — Jérôme [juh-rohm;; French zhey-rohm] /dʒəˈroʊm;; French ʒeɪˈroʊm/ (Show IPA), 1784–1860, king of Westphalia 1807 (brother of Napoleon I).
  • national agreement — written formal agreements covering rates of pay and other terms and conditions of employment that are the result of collective bargaining at national level between one or more trade unions and employers in a sector of the economy
  • national insurance — In Britain, national insurance is the state system of paying money to people who are ill, unemployed, or retired. It is financed by money that the government collects from people who work, or from their employers.
  • natural convection — Natural convection is the loss of heat from a hot solid or liquid into air which is not artificially agitated.
  • nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
  • neovascularization — the development of new blood vessels, especially in tissues where circulation has been impaired by trauma or disease.
  • neurodevelopmental — Of or pertaining to the development of neurological pathways in the brain.
  • neuroleptanalgesia — a semiconscious nonreactive state induced by certain drug combinations, as fentanyl with droperidol.
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