12-letter words containing p, o, s, t, m, a
- magnetopause — the boundary between the earth's magnetosphere and interplanetary space, about 40,000 miles (65,000 km) above the earth, marked by an abrupt decrease in the earth's magnetic induction.
- main-topmast — the mast next above the main lower mast.
- main-topsail — a topsail set on the mainmast.
- malpositions — Plural form of malposition.
- manipulators — Plural form of manipulator.
- massotherapy — treatment by massage.
- master point — a point awarded to a bridge player who has won or placed in an officially recognized tournament.
- mastigophora — a phylum of protozoans comprising nonphotosynthetic, chiefly free-living flagellates: some species are important pathogens of humans and other animals.
- mastigophore — Any flagellate of the phylum Mastigophora.
- matopo hills — the granite hills south of Bulawayo, Zimbabwe, where Cecil Rhodes chose to be buried
- mediatorship — the position of a mediator
- 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.
- 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
- misanthropes — Plural form of misanthrope.
- misanthropic — of, relating to, or characteristic of a misanthrope.
- misoperation — an act or instance, process, or manner of functioning or operating.
- misportrayal — the act of portraying.
- monopetalous — gamopetalous.
- monosynaptic — having or relating to a sole synapse
- montparnasse — a district in S Paris, France, on the left bank of the Seine: noted for its cafés and the artists and writers who have frequented and lived in the area.
- morphosyntax — the study of the morphological and syntactic properties of linguistic or grammatical units.
- mount pisgah — the mountain slopes to the northeast of the Dead Sea, from one of which, Mount Nebo, Moses viewed Canaan
- mountaintops — Plural form of mountaintop.
- mousetrapped — Simple past tense and past participle of mousetrap.
- mycoparasite — a parasitic fungus whose host is another fungus.
- neoplatonism — a philosophical system, originated in the 3rd century a.d. by Plotinus, founded chiefly on Platonic doctrine and Eastern mysticism, with later influences from Christianity. It holds that all existence consists of emanations from the One with whom the soul may be reunited.
- operationism — the doctrine that the meaning of a scientific term, concept, or proposition consists of the operation or operations performed in defining or demonstrating it.
- ophthalmitis — ophthalmia.
- optic chiasm — a site at the base of the forebrain where the inner half of the fibers of the left and right optic nerves cross to the opposite side of the brain.
- optimisation — Alternative spelling of optimization.
- optimistical — disposed to take a favorable view of events or conditions and to expect the most favorable outcome.
- paedobaptism — the baptism of infants
- palindromist — a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam, I'm Adam or Poor Dan is in a droop.
- paronomastic — the use of a word in different senses or the use of words similar in sound to achieve a specific effect, as humor or a dual meaning; punning.
- periostracum — the external, chitinlike covering of the shell of certain mollusks that protects the limy portion from acids.
- peristomatic — surrounding a leaf's stoma or stomata
- photorealism — a style of painting flourishing in the 1970s, especially in the U.S., England, and France, and depicting commonplace scenes or ordinary people, with a meticulously detailed realism, flat images, and barely discernible brushwork that suggests and often is based on or incorporates an actual photograph.
- phragmoplast — the cytoplasmic structure that forms at the equator of the spindle after the chromosomes have divided during the anaphase of plant mitosis, and that initiates cell division.
- pictorialism — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- plasma torch — an electrical device for converting a gas into a plasma, used for melting metal
- plasmosomata — a kind of nucleoli
- plastic bomb — a bomb made of plastic explosive.
- plastic foam — expanded plastic.