13-letter words containing s, e, r, o
- magnetometers — Plural form of magnetometer.
- magnetosphere — the outer region of the earth's ionosphere, where the earth's magnetic field controls the motion of charged particles, as in the Van Allen belts. Compare magnetopause.
- major premise — Logic. an argument the conclusion of which is supported by two premises, of which one (major premise) contains the term (major term) that is the predicate of the conclusion, and the other (minor premise) contains the term (minor term) that is the subject of the conclusion; common to both premises is a term (middle term) that is excluded from the conclusion. A typical form is “All A is C; all B is A; therefore all B is C.”.
- major release — (programming) A release of a piece of software which is not merely a revision or a bug fix release but which contains substantial changes (e.g., an overhaul of the interface, change in compatibility). Traditionally, major releases are numbered as X.0; for example, WordPerfect 6.0 is a major release, significantly different from any previous version; whereas WordPerfect 6.1 has only minor changes, and is, thus, only a revision. See also major delivery.
- make sport of — to mock or ridicule; poke fun at
- maladroitness — lacking in adroitness; unskillful; awkward; bungling; tactless: to handle a diplomatic crisis in a very maladroit way.
- maltese cross — a cross having four equal arms that expand in width outward.
- mammaliferous — containing the remains of mammals
- mandatoriness — The quality or state of being mandatory.
- manganiferous — containing manganese.
- manufactories — Plural form of manufactory.
- marchionesses — Plural form of marchioness.
- mare frigoris — (Sea of Cold) a dark plain in the northern hemisphere, in the first and second quadrants of the face of the moon: about 55 miles (90 km) wide at its narrowest width and 750 miles (1200 km) long: about 67,000 sq. mi. (174,000 sq. km).
- margaret rose — 1930–2002, English princess (daughter of George VI; sister of Elizabeth II).
- market forces — factors driving the economy
- marketisation — Alternative spelling of marketization.
- marriage vows — promises made as part of wedding ceremony
- marsh trefoil — buck bean.
- martyrologies — Plural form of martyrology.
- marvelousness — The quality or state of being marvelous.
- marx brothers — the. a US family of film comedians, esp Arthur Marx, known as Harpo (1888–1964), Herbert Marx, known as Zeppo (1901–79), Julius Marx, known as Groucho (1890–1977), and Leonard Marx, known as Chico (1886–1961). Their films include Animal Crackers (1930), Monkey Business (1931), Horsefeathers (1932), Duck Soup (1933), and A Day at the Races (1937)
- master policy — a single policy covering a group of people, typically employees of a company, issued to an employer.
- master-stroke — a masterly action or achievement; an extremely skillful or effective action: War was avoided by a masterstroke of diplomacy.
- masterstrokes — Plural form of masterstroke.
- masticatories — Plural form of masticatory.
- matripotestal — of or relating to the authority exercised by a mother or a mother's blood relatives.
- measure up to — to fulfil (expectations, standards, etc)
- measuring rod — ruler, gauge, stick for measuring
- measuringworm — the larva of any geometrid moth, which progresses by bringing the rear end of the body forward and then advancing the front end.
- meat products — foods that consist of or contain meat
- megasporangia — a sporangium containing megaspores.
- megasporocyte — a diploid cell in plants that undergoes meiosis to create four haploid megaspores.
- melanochroous — having dark-coloured or black skin
- melodramatics — Melodramatic behavior, action, or writing.
- melodramatist — A writer of melodramas.
- melrose abbey — a ruined Cistercian abbey in Melrose in Scottish Borders: founded in 1136 and sacked by the English in 1385 and 1547: repaired in 1822 by Sir Walter Scott
- membranaceous — Resembling or having properties of a membrane.
- memorabiliast — a person who collects mementos or souvenirs, as postcards or playbills.
- memorableness — Memorability.
- memorialising — Present participle of memorialise.
- mercerisation — A process of treating cotton with sodium hydroxide in order to make it more lustrous.
- meritocracies — Plural form of meritocracy.
- meritoriously — deserving praise, reward, esteem, etc.; praiseworthy: to receive a gift for meritorious service.
- merrythoughts — Plural form of merrythought.
- mesi protocol — (processor) Modified, Exclusive, Shared, Invalid. A cache coherency protocol where each cache line is marked with one of the four states. The MESI protocol is used by the Pentium processor.
- mesmerization — to hypnotize.
- mesne profits — rents or profits accruing during the rightful owner's exclusion from his land
- message board — bulletin board system
- messenger boy — A messenger boy is a boy who is employed to take messages to people.
- metachromasia — A characteristic change in the colour of staining carried out in biological tissues, exhibited by certain aniline dyes when they bind to particular substances present in these tissues, called chromotropes.