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  • English Word Pernio Definition A chilblain.
  • English Word Pernoctalian Definition One who watches or keeps awake all night.
  • English Word Pernoctation Definition The act or state of passing the whole night; a remaining all night.
  • English Word Pernor Definition One who receives the profits, as of an estate.
  • English Word Pernot furnace Definition A reverberatory furnace with a circular revolving hearth, -- used in making steel.
  • English Word Pernyi moth Definition A silk-producing moth (Attacus Pernyi) which feeds upon the oak. It has been introduced into Europe and America from China.
  • English Word Perofskite Definition A titanate of lime occurring in octahedral or cubic crystals.
  • English Word Perogue Definition See Pirogue.
  • English Word Peronate Definition A term applied to the stipes or stalks of certain fungi which are covered with a woolly substance which at length becomes powdery.
  • English Word Peroneal Definition Of or pertaining to the fibula; in the region of the fibula.
  • English Word Perorate Definition To make a peroration; to harangue.
  • English Word Peroration Definition The concluding part of an oration; especially, a final summing up and enforcement of an argument.
  • English Word Peroxidation Definition Act, process, or result of peroxidizing; oxidation to a peroxide.
  • English Word Peroxide Definition An oxide containing more oxygen than some other oxide of the same element. Formerly peroxides were regarded as the highest oxides. Cf. Per-, 2.
  • English Word Peroxidize Definition To oxidize to the utmost degree, so as to form a peroxide.
  • English Word Peroxidized Definition of Peroxidize
  • English Word Peroxidizing Definition of Peroxidize
  • English Word Perpend Definition To weight carefully in the mind.
  • English Word Perpend Definition To attend; to be attentive.
  • English Word Perpend stone Definition See Perpender.
  • English Word Perpender Definition A large stone reaching through a wall so as to appear on both sides of it, and acting as a binder; -- called also perbend, perpend stone, and perpent stone.
  • English Word Perpendicle Definition Something hanging straight down; a plumb line.
  • English Word Perpendicular Definition Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.
  • English Word Perpendicular Definition At right angles to a given line or surface; as, the line ad is perpendicular to the line bc.
  • English Word Perpendicular Definition A line at right angles to the plane of the horizon; a vertical line or direction.
  • English Word Perpendicular Definition A line or plane falling at right angles on another line or surface, or making equal angles with it on each side.
  • English Word Perpendicularity Definition The quality or state of being perpendicular.
  • English Word Perpendicularly Definition In a perpendicular manner; vertically.
  • English Word Perpension Definition Careful consideration; pondering.
  • English Word Perpensity Definition Perpension.