18-letter words containing the
- mathematical logic — symbolic logic.
- mathematical model — a representation of a system, process, etc, in mathematical terms
- meurthe-et-moselle — a department in NE France. 2038 sq. mi. (5280 sq. km). Capital: Nancy.
- middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
- moog (synthesizer) — an early musical synthesizer
- mop the floor with — that part of a room, hallway, or the like, that forms its lower enclosing surface and upon which one walks.
- moscow art theater — a Russian theatrical company founded in 1898 principally by Konstantin Stanislavski and famous for its naturalistic acting.
- move the goalposts — to change the aims of an activity to ensure the desired results
- nailed to the wall — [like a trophy] Said of a bug finally eliminated after protracted, and even heroic, effort.
- naked and the dead — a novel (1948) by Norman Mailer.
- 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.
- netherlands guiana — a former name of Suriname.
- none the worse for — not harmed by (adverse events or circumstances)
- northeast by north — a point on the compass 11°15′ north of northeast. Abbreviation: NEbN.
- northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
- northern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
- northern territory — an administrative division of N central Australia, on the Timor and Arafura Seas: the Arunta Desert lies in the east, the Macdonnell Ranges in the south, and Arnhem Land in the north (containing Australia's largest Aboriginal reservation); the Ashmore and Cartier Islands constitute a separate Australian External Territory. Capital: Darwin. Pop: 233 300 (2012 est). Area: 1 347 525 sq km (520 280 sq miles)
- northern transvaal — province of South Africa, in the N part: 47,599 sq mi (123,280 sq km); pop. 5,202,000; cap. Pietersburg
- not breathe a word — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
- not have the heart — If you want to do something but do not have the heart to do it, you do not do it because you know it will make someone unhappy or disappointed.
- officer of the day — an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.
- old man of the sea — (in The Arabian Nights' Entertainments) an old man who clung to the shoulders of Sindbad the Sailor for many days and nights.
- on the back burner — low priority
- on the credit side — You say on the credit side in order to introduce one or more good things about a situation or person, usually when you have already mentioned the bad things about them.
- on the danger list — critically ill in hospital
- on the ragged edge — precariously close to loss of self-control, mental stability, etc.
- on the strength of — the quality or state of being strong; bodily or muscular power; vigor.
- one way or another — somehow, by some means
- out of the running — the act of a person, animal, or thing that runs.
- over the long term — in the future
- paint the town red — a substance composed of solid coloring matter suspended in a liquid medium and applied as a protective or decorative coating to various surfaces, or to canvas or other materials in producing a work of art.
- par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
- pass the hat round — to collect money, as for a cause
- patron of the arts — someone who acts as a patron to or supports charities, organizations, and individuals that work in or concern the arts
- pave the way (for) — to prepare the way (for); facilitate the introduction (of)
- perish the thought — to die or be destroyed through violence, privation, etc.: to perish in an earthquake.
- peter and the wolf — a composition by Sergei Prokofiev written in 1936. It is a children's story with both music and text, spoken by a narrator accompanied by the orchestra
- physical therapist — sb who performs physiotherapy
- pick of the litter — objects strewn or scattered about; scattered rubbish.
- pick up the pieces — deal with aftermath
- play the race card — to introduce the subject of race into a public discussion, esp to gain a strategic advantage
- pollen mother cell — one of the mother cells that produce four microspores by meiosis.
- pound the pavement — a paved road, highway, etc.
- prepare the ground — make conditions ready
- probability theory — the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Compare probability (def 4).
- prometheus unbound — a drama in verse (1820) by Shelley.
- psychotherapeutics — psychotherapy.
- pulp canal therapy — endodontics.
- puss in the corner — a parlor game for children in which one player in the middle of a room tries to occupy any of the positions along the walls that become vacant as other players dash across to exchange places at a signal.
- put heads together — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.