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15-letter words containing e, m, p, t

  • pachymeningitis — inflammation of the dura mater of the brain and spinal cord
  • palaeomagnetism — the study of the fossil magnetism in rocks, used to determine the past configurations of the continents and to investigate the past shape and magnitude of the earth's magnetic field
  • palaeomagnetist — a student of or expert in palaeomagnetism
  • paleolithic man — any of the prehistoric populations of humans, as the Cro-Magnon, living in the late Pliocene and the Pleistocene epochs.
  • pandorae fretum — an area in the southern hemisphere of Mars.
  • parallel motion — a mechanism arranged so as to impart rectilinear motion to a rod connected to a lever that moves through an arc.
  • parametrization — a parametric representation; the act of representing as or defining parameters
  • parasympathetic — pertaining to that part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions and function in opposition to the sympathetic system, as in inhibiting heartbeat or contracting the pupil of the eye.
  • parchment paper — a waterproof and grease-resistant paper produced by treating ordinary paper with concentrated sulfuric acid.
  • parent compound — a compound from which derivatives may be obtained.
  • parliamentarian — a person who is expert in the formal rules and procedures of deliberative assemblies and other formal organizations.
  • parliamentarily — in a parliamentary manner
  • pars intermedia — a small, somewhat cherry-shaped double structure attached by a stalk to the base of the brain and constituting the master endocrine gland affecting all hormonal functions in the body, consisting of an anterior region ((anterior pituitary) or (adenohypophysis)) that develops embryonically from the roof of the mouth and that secretes growth hormone, LH, FSH, ACTH, TSH, and MSH, a posterior region ((posterior pituitary) or (neurohypophysis)) that develops from the back of the forebrain and that secretes the hormones vasopressin and oxytocin, and an intermediate part (pars intermedia) derived from the anterior region but joined to the posterior region, that secretes the hormone MSH in lower vertebrates.
  • patent medicine — a medicine sold without a prescription in drugstores or by sales representatives, and usually protected by a trademark.
  • pattern bombing — aerial bombing in which bombs are dropped on a target in a predetermined pattern.
  • paurometabolous — designating or of a group of insect orders, as orthopterans or hemipterans, in which metamorphosis to the adult state from the juvenile state is gradual and without any sudden, radical change of body form
  • pavement artist — sidewalk artist.
  • payment holiday — a break taken from paying ( a debt etc) back
  • pectoral muscle — muscle of the chest
  • pedestrian mall — A pedestrian mall is the same as a pedestrian precinct.
  • peltier element — an electronic device consisting of metal strips between which alternate strips of n-type and p-type semiconductors are connected. Passage of a current causes heat to be absorbed from one set of metallic strips and emitted from the other by the Peltier effect
  • pematangsiantar — a city on NE Sumatra, in Indonesia.
  • pendulum effect — Also called pendulum law. Physics. a law, discovered by Galileo in 1602, that describes the regular, swinging motion of a pendulum by the action of gravity and acquired momentum.
  • pentium ii xeon — (processor)   The successor to Intel Corporation's Pentium II processor. The Xeon has the same P6 core as existing Pentium Pro/Pentium II units, but it supports a 100 MHz system bus and offers as much as 2 MB of level 2 cache.
  • performance art — a collaborative art form originating in the 1970s as a fusion of several artistic media, as painting, film, video, music, drama, and dance, and deriving in part from the 1960s performance happenings.
  • performing arts — dance, drama, music
  • pergamentaceous — (esp of plants) resembling parchment, whether in texture or composition
  • perimeter fence — fence surrounding an area
  • periodic motion — any motion that recurs in identical forms at equal intervals of time.
  • periodic system — a system of classification of the elements based on the periodic law.
  • permanent press — a process in which a fabric is chemically treated to make it wrinkle-resistant so as to require little or no ironing after washing.
  • permanent tooth — any of the 32 adult teeth that replace the 20 milk teeth.
  • pessimistically — pertaining to or characterized by pessimism or the tendency to expect only bad outcomes; gloomy; joyless; unhopeful: His pessimistic outlook kept him from applying for jobs for which he was perfectly qualified.
  • peter of amiens — c1050–1115, French monk: preacher of the first Crusade 1095–99.
  • petroleum ether — a volatile mixture of the higher alkane hydrocarbons, obtained as a fraction of petroleum and used as a solvent
  • petroleum jelly — sticky substance used as lubricant
  • pharmacotherapy — the treatment of disease through the administration of drugs.
  • phenomenalistic — the doctrine that phenomena are the only objects of knowledge or the only form of reality.
  • phenomenologist — the study of phenomena.
  • phonemicization — a grouping of phonemes
  • photomechanical — noting or pertaining to any of various processes for printing from plates or surfaces prepared by the aid of photography.
  • photomicroscope — a microscope having an illuminator and a camera mechanism for producing a photomicrograph.
  • photomultiplier — an extremely sensitive detector of light and of other radiation, consisting of a tube in which the electrons released by radiation striking a photocathode are accelerated, greatly amplifying the signal obtainable from small quantities of radiation.
  • phytochemically — in a phytochemical manner
  • picture element — (graphics)   (pixel) The smallest resolvable rectangular area of an image, either on a screen or stored in memory. Each pixel in a monochrome image has its own brightness, from 0 for black to the maximum value (e.g. 255 for an eight-bit pixel) for white. In a colour image, each pixel has its own brightness and colour, usually represented as a triple of red, green and blue intensities (see RGB). Compare voxel.
  • picture-framing — the job of framing photos, paintings etc
  • piece to camera — a TV report in which a reporter is filmed saying something
  • pilgrim fathers — the Pilgrims (of Plymouth Colony)
  • pilgrimage site — a shrine or other sacred place that people travel to as an act of religious devotion
  • pincer movement — a military maneuver in which both flanks of an enemy force are attacked with the aim of attaining complete encirclement.
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