perfect number

1 definition found

perfect number - Collaborative International Dictionary of English v.0.48 :

  Perfect \Per"fect\ (p[~e]r"f[e^]kt), a. [OE. parfit, OF. parfit,
     parfet, parfait, F. parfait, L. perfectus, p. p. of perficere
     to carry to the end, to perform, finish, perfect; per (see
     Per-) + facere to make, do. See Fact.]
     1. Brought to consummation or completeness; completed; not
        defective nor redundant; having all the properties or
        qualities requisite to its nature and kind; without flaw,
        fault, or blemish; without error; mature; whole; pure;
        sound; right; correct.
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              My strength is made perfect in weakness. --2 Cor.
                                                    xii. 9.
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              Three glorious suns, each one a perfect sun. --Shak.
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              I fear I am not in my perfect mind.   --Shak.
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              O most entire perfect sacrifice!      --Keble.
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              God made thee perfect, not immutable. --Milton.
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     2. Well informed; certain; sure.
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              I am perfect that the Pannonians are now in arms.
                                                    --Shak.
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     3. (Bot.) Hermaphrodite; having both stamens and pistils; --
        said of a flower.
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     Perfect cadence (Mus.), a complete and satisfactory close
        in the harmony, as upon the tonic preceded by the
        dominant.
  
     Perfect chord (Mus.), a concord or union of sounds which is
        perfectly coalescent and agreeable to the ear, as the
        unison, octave, fifth, and fourth; a perfect consonance; a
        common chord in its original position of keynote, third,
        fifth, and octave.
  
     Perfect number (Arith.), a number equal to the sum of all
        its divisors; as, 28, whose aliquot parts, or divisors,
        are 14, 7, 4, 2, 1. See Abundant number, under
        Abundant. --Brande & C.
  
     Perfect tense (Gram.), a tense which expresses an act or
        state completed; also called the perfective tense.
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     Syn: Finished; consummate; complete; entire; faultless;
          blameless; unblemished.
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