12-letter words containing s, e, p, m, a
- lamprophyres — Plural form of lamprophyre.
- laparotomies — Plural form of laparotomy.
- leprosariums — Plural form of leprosarium.
- leptosomatic — a person of asthenic build.
- lisp machine — 1. (architecture) Any machine (whether notional or actual) whose instruction set is Lisp. 2. (hardware, operating system) A line of workstations made by Symbolics, Inc. from the mid-1970s (having grown out of the MIT AI Lab) to late 1980s. All system code for Symbolics Lisp Machines was written in Lisp Machine Lisp. Symbolics Lisp Machines were also notable for having had space-cadet keyboards.
- litmus paper — a strip of paper impregnated with litmus, used as a chemical indicator.
- lopez mateos — Adolfo [ah-th awl-faw] /ɑˈðɔl fɔ/ (Show IPA), 1910–69, Mexican lawyer and politician: president of Mexico 1958–64.
- machine shop — a workshop in which metal and other substances are cut, shaped, etc., by machine tools.
- macropterous — having long or large wings or fins.
- madreporites — Plural form of madreporite.
- 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.
- magpie goose — a black-and-white gooselike bird, Anseranas semipalmatus, of Australia, believed to be the most primitive waterfowl in existence.
- make-up base — a primer of make-up applied to the face in order to prepare it for the main layer of make-up
- make-up case — a case in which cosmetics are kept
- malpractices — Plural form of malpractice.
- manspreading — the practice by a male passenger on public transport of sitting with his legs wide apart, so denying space to passengers beside him
- mantelpieces — Plural form of mantelpiece.
- 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.
- marketplaces — Plural form of marketplace.
- marlinespike — a pointed iron implement used in separating the strands of rope in splicing, marling, etc.
- marlingspike — Alternative spelling of marlinspike.
- masking tape — an easily removed adhesive tape used temporarily for defining margins, protecting surfaces, etc., as when painting, and sometimes also for binding, sealing, or mending.
- 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.
- master print — an original copy of a cinema film that can be used to produce other copies
- masterpieces — Plural form of masterpiece.
- mastigophore — Any flagellate of the phylum Mastigophora.
- meanspirited — petty; small-minded; ungenerous: a meanspirited man, unwilling to forgive.
- media person — a person who works in the mass media
- median strip — a paved, planted, or landscaped strip in the center of a highway that separates lanes of traffic going in opposite directions.
- 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.
- melanophores — Plural form of melanophore.
- melliphagous — (of an animal) feeding on honey
- melrose park — a city in NE Illinois, near Chicago.
- mesoappendix — the mesentery of the vermiform appendix.
- mesocephalic — having a head with a cephalic index between that of dolichocephaly and brachycephaly.
- 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.
- metaphrasing — Present participle of metaphrase.
- metaphrastic — a person who translates or changes a literary work from one form to another, as prose into verse.
- metaphysical — pertaining to or of the nature of metaphysics.
- metapolitics — political theory: often used derogatorily
- metapsychics — the study of psychic phenomena beyond the limits of ordinary or orthodox psychology