9-letter words containing m, o, n, t, r
- magnetron — a two-element vacuum tube in which the flow of electrons is under the influence of an external magnetic field, used to generate extremely short radio waves.
- mandatory — authoritatively ordered; obligatory; compulsory: It is mandatory that all students take two years of math.
- manometer — an instrument for measuring the pressure of a fluid, consisting of a tube filled with a liquid, the level of the liquid being determined by the fluid pressure and the height of the liquid being indicated on a scale.
- manometry — an instrument for measuring the pressure of a fluid, consisting of a tube filled with a liquid, the level of the liquid being determined by the fluid pressure and the height of the liquid being indicated on a scale.
- manticore — a legendary monster with a man's head, horns, a lion's body, and the tail of a dragon or, sometimes, a scorpion.
- marathons — Plural form of marathon.
- marlstone — an indurated marl.
- martagons — Plural form of martagon.
- martinson — Harry Edmund [har-ee ed-muh nd;; Swedish hah-ri ed-moo nt] /ˈhær i ˈɛd mənd;; Swedish ˈhɑ rɪ ˈɛd mʊnt/ (Show IPA), 1904–78, Swedish novelist and poet: Nobel prize 1974.
- masterson — William Barclay ("Bat") 1853–1921, U.S. frontier law officer.
- matrimony — the state of being married; marriage: He was married in 1870 and lived in matrimony 12 years.
- matronage — the state of being a matron.
- matronize — to cause to become matronly; cause to act as, or fulfill the role of, matron.
- mellotron — a synthesizer that plays a prerecorded sound, stored on tape, when a key is pressed
- mentorial — Of or relating to a mentor.
- mentoring — a wise and trusted counselor or teacher.
- merestone — A stone designating a limit or boundary; a landmark.
- mestranol — an estrogen, C 2 1 H 2 6 O 2 , used in oral contraceptives in combination with a progestin.
- metarchon — a nontoxic substance, such as a chemical to mask pheromones, that reduces the persistence of a pest
- metformin — an oral drug, C 4 H 11 N 5 , used in the treatment of type 2 diabetes, often in combination with repaglinide.
- metronome — a mechanical or electrical instrument that makes repeated clicking sounds at an adjustable pace, used for marking rhythm, especially in practicing music.
- microdont — abnormally small teeth.
- micronuts — Plural form of micronut.
- microthin — extremely or, sometimes, microscopically thin: a microthin layer of aluminum.
- microtone — any musical interval smaller than a semitone, specifically, a quarter tone.
- migration — the process or act of migrating.
- minitower — a vertical case, smaller than a tower, designed to house a computer system standing on a desk or floor.
- minotaurs — Plural form of minotaur.
- misorient — to orient wrongly or improperly.
- mockernut — a North American hickory, Carya tomentosa, bearing a sweet, edible nut.
- modernist — a person who follows or favors modern ways, tendencies, etc.
- modernity — the quality of being modern.
- moistener — Something used to moisten, especially a cosmetic.
- momentary — lasting but a moment; very brief; fleeting: a momentary glimpse.
- monastery — a house or place of residence occupied by a community of persons, especially monks, living in seclusion under religious vows.
- monastral — denoting certain fast pigments used in paints and inks, derived from phthalocyanine
- moneywort — a creeping plant, Lysimachia nummularia, of the primrose family, having roundish leaves and solitary yellow flowers.
- monitored — (especially formerly) a student appointed to assist in the conduct of a class or school, as to help take attendance or keep order.
- monitress — a female student who helps keep order or assists a teacher in school.
- monoester — a single esterified polybasic acid.
- monolatry — the worship of only one god although other gods are recognized as existing.
- monometer — a line of verse of one measure or foot.
- monoprint — A form of printing on paper from a glass sheet to which oil paint has been applied; monotype.
- monotower — A monotower is an offshore platform without any workers, which has one leg.
- monotreme — any animal of the Monotremata, the most primitive order of mammals, characterized by certain birdlike and reptilian features, as hatching young from eggs, and having a single opening for the digestive, urinary, and genital organs, comprising only the duckbill and the echidnas of Australia and New Guinea.
- monotroch — a one-wheeled means of transportation, such as a wheelbarrow
- monotropy — polymorphism that is irreversible.
- monsarrat — Nicholas, 1910–79, English novelist in Canada.
- monstered — Simple past tense and past participle of monster.
- monstrous — frightful or hideous, especially in appearance; extremely ugly.