12-letter words containing p, r, o, e, s
- ionospherist — Someone who studies the ionosphere.
- iron pyrites — pyrite; fool's gold.
- irresponsive — not responsive; not responding, or not responding readily, as in speech, action, or feeling.
- isoperimeter — a figure whose perimeter is equal to that of another.
- isoperimetry — the study of isoperimeters.
- isoprenaline — a compound that is a derivative of adrenaline and that is used to treat asthma and bronchial conditions. Formula: C11H17NO3
- isopropoxide — (chemistry) The univalent anion derived from isopropanol by removal of the hydroxy hydrogen atom; and salt containing this anion.
- japonaiserie — stylistic characteristics, as in art, decor, or film, influenced by or reflective of Japanese culture and tradition.
- jeopardising — Present participle of jeopardise.
- jeopardously — with risk or peril
- joseph brant — Joseph (Thayendanegea) 1742–1807, Mohawk Indian chief who fought on the side of the British in the American Revolution.
- jump shooter — a player skilled at jump shots.
- jury process — the writ used to summon jurors
- keratoplasty — plastic surgery performed upon the cornea, especially a corneal transplantation.
- lamprophyres — Plural form of lamprophyre.
- laparoscopes — Plural form of laparoscope.
- laparotomies — Plural form of laparotomy.
- laryngoscope — a rigid or flexible endoscope passed through the mouth and equipped with a source of light and magnification, for examining and performing local diagnostic and surgical procedures on the larynx.
- laser weapon — weapons which make use of lasers or lasers used as weapons
- leapfroggers — Plural form of leapfrogger.
- leopard seal — a yellowish-gray, spotted seal, Hydrurga leptonyx, of the Antarctic.
- leopardesses — Plural form of leopardess.
- 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.
- 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
- linespersons — Plural form of linesperson.
- lipoproteins — Plural form of lipoprotein.
- 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.
- 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.
- lycanthropes — Plural form of lycanthrope.
- macropterous — having long or large wings or fins.
- madreporites — Plural form of madreporite.
- 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
- 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.
- melrose park — a city in NE Illinois, near Chicago.