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Dictionary Suite
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perchlorate a salt or ester of perchloric acid.
perchloric acid a strong acid of hydrogen, chlorine, and oxygen that is unstable in some conditions, is a powerful oxidizing agent, and is used as a catalyst and in explosives.
percipient having an acute power of perception or discernment; perceptive.
percolate to cause (a liquid) to trickle or pass through something porous, such as a filter. [6 definitions]
percolator a coffee pot that makes coffee by repeatedly forcing boiling water up through a hollow center tube and filtering it through a basket filled with coffee grounds.
percussion the forceful striking of one usu. hard object against another, esp. when sound is produced on impact. [4 definitions]
percussion cap a small metal cap containing gunpowder or other charge that explodes when struck.
percussion instrument a musical instrument, such as a drum, cymbal, xylophone, or piano, in which the sound is produced when some part is struck.
percussionist a musician who plays percussion instruments.
percussive of, concerning, or characterized by percussion.
percutaneous of a medical procedure, done through the skin.
per diem by the day; per day. [3 definitions]
perdition the loss of the soul for eternity; damnation. [3 definitions]
Perdix in Greek mythology, the Athenian who invented the saw and who was turned into a partridge by Athena after Daedalus, in a fit of envy, threw him from a roof. [2 definitions]
père (French) father. [2 definitions]
peregrinate to wander or travel from place to place, esp. by foot. [2 definitions]
peregrine traveling; migratory.
peregrine falcon a very swift falcon whose survival was seriously endangered by the pesticide DDT in the 195s and 1960s.
peremptory not permitting refusal or disobedience. [4 definitions]
perennial lasting throughout the year, for many years, or indefinitely; constant. [4 definitions]
perestroika (Russian) restructuring or rebuilding; creating a new structure for an existing thing.