12-letter words containing e, s, p, o
- magpie goose — a black-and-white gooselike bird, Anseranas semipalmatus, of Australia, believed to be the most primitive waterfowl in existence.
- marine corps — a branch of the U.S. Armed Forces trained for land, sea, and air combat, typically for land combat in conjunction with an amphibious or airborne landing, and whose commandant is responsible to the secretary of the navy.
- mass-produce — to produce or manufacture (goods) in large quantities, especially by machinery.
- massotherapy — treatment by massage.
- master point — a point awarded to a bridge player who has won or placed in an officially recognized tournament.
- mastigophore — Any flagellate of the phylum Mastigophora.
- media person — a person who works in the mass media
- mediatorship — the position of a mediator
- meeting post — a timber with a chamfer at the outer edge of a lock gate that fits against the meeting post of another lock gate.
- meganthropus — a proposed genus of extinct, late lower Pleistocene primates based on two large lower jaws found in Java, and believed to be either Australopithecine or human.
- melanophores — Plural form of melanophore.
- melliphagous — (of an animal) feeding on honey
- melrose park — a city in NE Illinois, near Chicago.
- mephibosheth — a son of Jonathan, and the grandson of Saul. II Sam 4:4.
- mesoappendix — the mesentery of the vermiform appendix.
- mesocephalic — having a head with a cephalic index between that of dolichocephaly and brachycephaly.
- mesomorphous — mesomorphic
- mesoplankton — plankton that live at middle depths.
- mesopotamian — an ancient region in W Asia between the Tigris and Euphrates rivers: now part of Iraq.
- metal polish — cleaning fluid designed to clean, polish or add shine to metal
- metamorphism — Geology. a change in the structure or constitution of a rock due to natural agencies, as pressure and heat, especially when the rock becomes harder and more completely crystalline.
- metamorphist — a member of a group of 16th century Christians who believed that the humanly body of Jesus Christ metamorphosed into God during the Ascension
- metamorphose — to change the form or nature of; transform.
- metamorphous — metamorphic.
- metapolitics — political theory: often used derogatorily
- metropolises — any large, busy city.
- microamperes — Plural form of microampere.
- microcapsule — a tiny capsule, 20–150 microns in diameter, used for slow-release application of drugs, pesticides, flavors, etc.
- microforceps — (surgery) A very small forceps.
- micropterous — (of certain animals, esp some types of ant) having small reduced wings
- microscopies — Plural form of microscopy.
- mifepristone — an antigestational drug, C 29 H 35 NO 2 , that prevents a fertilized egg from attaching to the uterine wall by blocking the action of progesterone.
- mips project — Microprocessor without Interlocked Pipeline Stages
- misanthropes — Plural form of misanthrope.
- misoperation — an act or instance, process, or manner of functioning or operating.
- mispronounce — Pronounce (a word) incorrectly.
- modus ponens — the principle that whenever a conditional statement and its antecedent are given to be true its consequent may be validly inferred, as in if it's Tuesday this must be Belgium and it's Tuesday so this must be Belgium
- mona passage — a strait between Hispaniola and Puerto Rico. 80 miles (129 km) wide.
- monadelphous — (of stamens) united into one bundle or set by their filaments.
- mond process — a process for obtaining nickel by heating the ore in carbon monoxide to produce nickel carbonyl vapour, which is then decomposed at a higher temperature to yield the metal
- money spider — any of certain small shiny brownish spiders of the family Linyphiidae
- money supply — the sum of demand or checking-account deposits and currency in circulation.
- monodisperse — (of a colloid) Having particles of (approximately) the same size.
- monopetalous — gamopetalous.
- monophysites — Plural form of monophysite.
- monopolizers — Plural form of monopolizer.
- monosepalous — gamosepalous.
- monospecific — having or comprising a single species
- monospermous — having one seed.
- monoterpenes — Plural form of monoterpene.