12-letter words containing o, p, e, n, a
- loop antenna — a coil of large diameter, used as an antenna, esp. in direction-finding equipment and in radio receivers
- lycanthropes — Plural form of lycanthrope.
- lymphadenoma — an enlarged lymph node.
- machine shop — a workshop in which metal and other substances are cut, shaped, etc., by machine tools.
- magnetograph — a recording magnetometer, used especially for recording variations in the earth's magnetic field.
- magnetooptic — pertaining to the effect of magnetism upon the propagation of light.
- 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.
- magnotherapy — Any of several alternative medicine therapies using magnetism.
- major planet — planet (def 1a).
- major-planet — Astronomy. Also called major planet. any of the eight large heavenly bodies revolving about the sun and shining by reflected light: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, or Neptune, in the order of their proximity to the sun. Until 2006, Pluto was classified as a planet ninth in order from the sun; it has been reclassified as a dwarf planet. a similar body revolving about a star other than the sun. (formerly) a celestial body moving in the sky, as distinguished from a fixed star, applied also to the sun and moon.
- marimbaphone — (obsolete, music) A kind of percussion idiophone, like the marimba but with steel keys instead of wood, developed in early 20th century United States.
- 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.
- master point — a point awarded to a bridge player who has won or placed in an officially recognized tournament.
- meclonazepam — A benzodiazepine derivative, similar in structure to clonazepam, with sedative and anxiolytic effects and antiparasitic activity against Schistosoma mansoni.
- media person — a person who works in the mass media
- median point — centroid (def 2).
- 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.
- melanotropin — MSH.
- meroplankton — a floating mass of eggs and larvae of organisms that are nektonic or benthic in their adult stage; temporary plankton.
- mesoappendix — the mesentery of the vermiform appendix.
- mesoplankton — plankton that live at middle depths.
- mesopotamian — an ancient region in W Asia between the Tigris and Euphrates rivers: now part of Iraq.
- metallophone — any musical instrument consisting of a graduated series of metal bars that may either be struck by hammers operated manually or played with a keyboard.
- metropolitan — of, noting, or characteristic of a metropolis or its inhabitants, especially in culture, sophistication, or in accepting and combining a wide variety of people, ideas, etc.
- micropayment — A very small payment made each time a user accesses an Internet page or service.
- microplanner — A subset of PLANNER, implemented in Lisp by Gerald Sussman et al at MIT. Its important features were goal-oriented, pattern-directed procedure invocation, an embedded knowledge base, and automatic backtracking. microPLANNER was superseded by Conniver.
- minor planet — asteroid (def 1).
- misanthropes — Plural form of misanthrope.
- misoperation — an act or instance, process, or manner of functioning or operating.
- mole mapping — the procedure of using a digital camera to record the positions and appearances of moles on a person's body so that regular checks will detect any changes that might lead to skin cancer
- 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.
- money player — a person who performs best under pressure, especially in a competitive situation.
- monocephalic — bearing one flower head, as the dandelion.
- monodelphian — any placental mammal that is a member of the group Monodelphia
- monopetalous — gamopetalous.
- monosepalous — gamosepalous.
- 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.
- name-dropper — a person who indulges in name-dropping.
- nanocomputer — (architecture) /nan'oh-k*m-pyoo'tr/ A computer with molecular-sized switching elements. Designs for mechanical nanocomputers which use single-molecule sliding rods for their logic have been proposed. The controller for a nanobot would be a nanocomputer. Some nanocomputers can also be called quantum computers because quantum physics plays a major role in calculations. Richard P. Feynman is still cited today for his work in this area.
- nanoparticle — a microscopic particle of matter that is measured on the nanoscale, usually one that measures less than 100 nanometers.
- napoleon iii — (Louis Napoleon; Charles Louis Napoleon Bonaparte) [loo-ee;; French lwee] /ˈlu i;; French lwi/ (Show IPA), 1808–73, president of France 1848–52, emperor of France 1852–70 (nephew of Napoleon I).
- narcotherapy — an infrequently used method of treating mental disorders by intravenous injection of barbiturates.
- necrographer — a person who writes obituaries
- necrophagous — That eats dead or decaying animal flesh.
- necrophiliac — an erotic attraction to corpses.
- neencephalon — the more recent part of the brain in the evolutionary development of animals, including the cerebral cortex and its related structures.
- neoanthropic — neanthropic.
- 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.