18-letter words containing a, m, e, r
- medical profession — the body of people who work as doctors of medicine
- medicine bow range — a range of the Rocky Mountains, in Wyoming and Colorado. Highest peak, Medicine Bow Peak, 12,014 feet (3662 meters).
- membrane transport — the process by which physiologically important substances, such as calcium ions, sugars, etc, are conveyed across a biological membrane
- mendel's first law — the principle, originated by Gregor Mendel, stating that during the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent.
- mental health care — services devoted to the treatment of mental illnesses and the improvement of mental health in people with mental disorders or problems
- 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
- merchant of venice — a comedy (1596?) by Shakespeare.
- mercury delay line — (storage, history) An archaic first-in first-out fixed time period data storage device using acoustic transducers to transmit data as waves in a trough or tube of mercury. EDSAC (Cambridge) and UNIVAC I used delay lines.
- mercury-vapor lamp — a lamp producing a light with a high actinic and ultraviolet content by means of an electric arc in mercury vapor.
- mergui archipelago — a group of over 200 islands in the Andaman Sea, off the Tenasserim coast of S Myanmar: mountainous and forested
- 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.
- metacentric height — the distance between the center of gravity and the metacenter of a floating body, as of a vessel.
- metamorphic facies — Geology. a group of metamorphic rock units characterized by particular mineralogic associations.
- methacrylate resin — an acrylic resin formed by polymerizing the esters or amides of methacrylic acid.
- methyl transferase — any of a class of enzymes that catalyze the transfer of methyl groups from one molecule to another.
- methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
- mexican fire-plant — a showy plant, Euphorbia heterophylla, of the spurge family, growing in the central U.S. to central South America, having red or mottled red and white bracts.
- mezzo-soprano clef — a C clef locating middle C on the line next to the lowest line of the staff.
- microencapsulation — the process of enclosing chemical substances in microcapsules.
- microenvironmental — Pertaining to a microenvironment.
- microinvertebrates — Plural form of microinvertebrate.
- 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
- microsoft exchange — (messaging) Microsoft's messaging and enterprise collaboration server. Exchange's primary role is as an electronic mail message store but it can also store calendars, task lists, contact details, and other data.
- microwave detector — a device for recording the speed of a motorist
- microwave spectrum — a spectrum of electromagnetic radiations whose wavelengths fall in the microwave range.
- mid-atlantic ridge — a north-south suboceanic ridge in the Atlantic Ocean from Iceland to Antarctica on whose crest are several groups of islands; shown by plate tectonics to be the axis along which North America has split away from Eurasia, and along which South America has split away from Africa.
- middle high german — the High German language of the period 1100–1500. Abbreviation: MHG.
- middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
- midstream operator — A midstream operator is a company that gathers, transports, and processes natural gas or oil.
- military policeman — A military policeman is a member of the military police.
- mineral supplement — a pill containing minerals that you take to improve your health
- mineralocorticoids — Plural form of mineralocorticoid.
- miniature pinscher — one of a German breed of toy dogs resembling a smaller version of the Doberman pinscher, having a flat skull, a smooth coat, erect ears, and a docked tail, bred originally as a watchdog.
- minister of health — a person appointed to head the government department of health
- minor tranquilizer — antianxiety drug.
- minority programme — a programme that appeals to a minority of the available audience
- misinterpretations — Plural form of misinterpretation.
- misplaced modifier — Grammar. a word, phrase, or clause that seems to refer to or modify an unintended word because of its placement in a sentence, as when young in When young, circuses appeal to all of us.
- misrepresentations — Plural form of misrepresentation.
- misunderestimation — (nonstandard) An inaccurate underestimation, or an act of misunderestimating.
- mixed martial arts — Mixed martial arts is a sport in which two people fight by hitting, kicking, and holding each other, both in a standing position and on the ground.
- 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 medicine — the study of disease or injury at the molecular or cellular level.
- molecular spectrum — the spectrum of light emitted or absorbed by a species of molecule.