12-letter words containing o, p, e, r
- leper colony — a place where people who have leprosy live in quarantine
- lepidopteran — lepidopterous.
- lepidopteron — any lepidopterous insect.
- lepidosirens — Plural form of lepidosiren.
- leprosariums — Plural form of leprosarium.
- leptospermum — any of various shrubs or trees of the genus Leptospermum, of the myrtle family, native to Australia and adjacent areas and often cultivated as ornamentals in milder climates.
- lexicography — the writing, editing, or compiling of dictionaries.
- liberty pole — Also called liberty tree. American History. a pole or tree, often with a liberty cap or a banner at the top, usually located on a village green or in a market square, used by the Sons of Liberty in many colonial towns as a symbol of protest against British rule and around which anti-British rallies were held.
- life support — equipment to sustain a patient's life
- life-support — of or relating to equipment or measures that sustain or artificially substitute for essential body functions, as breathing or disposal of body wastes: Without life-support equipment, the patient might die.
- ligniperdous — (of insects) wood-destroying
- line probing — A feature of some V.34 modems that will allow them to identify the capacity and quality of the phone line and adjust themselves to allow, for each individual connection, for maximum throughput using the highest possible data transmission rate.
- linespersons — Plural form of linesperson.
- liopleurodon — Any of the genus Liopleurodon of large carnivorous marine plesiosaurs, apex predators of the Middle to Late Jurassic seas that covered Europe.
- lipoproteina — a plasma lipoprotein containing protein and cholesterol, high levels of which are associated with atherosclerosis.
- lipoproteins — Plural form of lipoprotein.
- lithographed — Simple past tense and past participle of lithograph.
- lithographer — a person who works at lithography.
- lithospermum — any annual or perennial herbs and small shrubs of the genus lithospermum, of the borage family, native to Europe, N America, and northern Asia, and having white, blue, or yellow flowers
- lithospheric — Of or pertaining to the lithosphere.
- lithotripter — a device used for fragmenting kidney stones with ultrasound waves.
- liverpolitan — a native or inhabitant of Liverpool
- locker plant — an establishment for storing food under refrigeration, containing lockers for renting to individual users.
- london pride — a saxifragaceous plant, a hybrid between Saxifraga spathularis and S. umbrosa, having a basal rosette of leaves and pinkish-white flowers
- loop reactor — A loop reactor is a reactor in which the material is pumped round one or more vessels or stages in a continuous process.
- lophophorate — Of or relating to small aquatic invertebrates belonging to a group of phyla characterized by the possession of lophophores. They include bryozoans, brachiopods, and phoronids.
- loudspeakers — Plural form of loudspeaker, especially a pair for a left and right channel.
- lover's leap — a high area, as on a cliff, from which frustrated or grieving lovers jump or are reputed to have jumped to their death.
- low-pressure — having or involving a low or below-normal pressure, as steam or water.
- low-spirited — depressed; dejected: He is feeling rather low-spirited today.
- lower depths — a play (1902) by Maxim Gorki.
- luteotrophic — affecting the corpus luteum.
- lycanthropes — Plural form of lycanthrope.
- macrocephaly — Cephalometry. being or having a head with a large cranial capacity.
- macropterous — having long or large wings or fins.
- madreporites — Plural form of madreporite.
- magnetograph — a recording magnetometer, used especially for recording variations in the earth's magnetic field.
- 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.
- mapplethorpe — Robert, 1946–89, U.S. photographer.
- mare vaporum — (Sea of Vapors) a dark plain in the first quadrant and near the center of the face of the moon: about 39,000 sq. mi. (101,000 sq. km).
- 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.
- 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