12-letter words containing a, r, i, o, s, t
- marionettist — A puppeteer who controls a marionette.
- 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.
- masturbation — the stimulation or manipulation of one's own genitals, especially to orgasm; sexual self-gratification.
- matriclinous — Having mostly maternally-inherited characteristics.
- matrimonials — Plural form of matrimonial.
- matroclinous — inheritance in which the traits of the offspring are derived primarily from the maternal parent (opposed to patrocliny).
- mechatronics — The synergistic combination of mechanical engineering, electronic engineering and software engineering for the study of automata from an engineering perspective and the control of advanced hybrid systems.
- mediatorship — the position of a mediator
- memorialists — Plural form of memorialist.
- memorisation — Alternative spelling of memorization.
- menstruation — the periodic discharge of blood and mucosal tissue from the uterus, occurring approximately monthly from puberty to menopause in nonpregnant women and females of other primate species.
- mesocortical — Of or pertaining to the mesocortex.
- mesogastrium — the mesentery of the embryonic stomach.
- metachronism — An error in chronological ordering in which a character or an event is placed at too late a time.
- 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
- microanalyst — One who carries out microanalysis.
- microcrystal — a microscopic crystal.
- microstation — (application) A full-featured 2-D and 3-D CAD program for MS-DOS, Microsoft Windows, Macintosh, and Unix workstations from Bentley Systems, Inc. Created in 1984, MicroStation is a high-end package used worldwide in environments where many designers work on large, complex projects. MicroStation Modeler is a superset of MicroStation that provides solid modelling, and MasterPiece is MicroStation's rendering and animation program.
- migrationist — a person who considers it important for species of animals and plants to migrate for the purposes of distribution and evolution
- mineralogist — the science or study of minerals.
- ministration — the act of ministering care, aid, religious service, etc.
- misanthropes — Plural form of misanthrope.
- misanthropic — of, relating to, or characteristic of a misanthrope.
- miscegenator — a person who advocates or engages in miscegenation
- misconstrual — A misinterpretation of the meaning of something.
- miscreations — Plural form of miscreation.
- misformation — the act or process of forming or the state of being formed: the formation of ice.
- misfortunate — Having suffered misfortune; pitiable.
- misoperation — an act or instance, process, or manner of functioning or operating.
- misorientate — misorient.
- misportrayal — the act of portraying.
- mob hysteria — the heightened and extreme emotions that can be experienced by people in a large crowd
- montebrasite — a mineral, lithium aluminum hydroxyl phosphate, LiAlPO 4 (OH), isomorphous with amblygonite, used as an ore of lithium.
- montessorian — a system for teaching young children, in which the fundamental aim is self-motivated education by the children themselves, as they are encouraged to move freely through individualized instruction and physical exercises, accompanied by special emphasis on the training of the senses and the early development of reading and writing skills.
- mooring mast — the mast or tower to which a dirigible is moored.
- moralisation — Standard spelling of moralization.
- morning star — a bright planet, especially Venus, seen in the east immediately before sunrise.
- motor sailer — a yacht having sails and an engine as an alternative or auxiliary means of propulsion.
- motorisation — Alternative spelling of motorization.
- mountaineers — Plural form of mountaineer.
- mouse trails — (operating system) A feature (usually of Graphical User Interfaces) which causes the mouse pointer to leave a trail across the screen. This is done by keeping track of the last eight or so (maybe configurable) pointer positions, and only erasing the oldest. This means that at any time, there may be up to eight pointers on the screen, but if the mouse is still, they will all be in the same position, and so only one will be visible. When the mouse moves, it appears to leave a trail of pointers behind it, and this can dramatically increase the visibility of the pointer when using LCD screens. The older ones had such long persistence that a single mouse pointer, when moving, tended to be completely invisible, and on a cluttered screen, was very difficult to find.
- mousquetaire — musketeer.
- multifarious — having many different parts, elements, forms, etc.
- multivarious — Many and various.
- murmurations — Plural form of murmuration.
- musterbation — Alt form musturbation.
- musturbation — (psychology) The compulsive insistence that things ought to be a particular way.