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From Biology-Online Dictionary | Biology-Online Dictionary
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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. My strength is made perfect in weakness. (2 cor. Xii. 9) Three glorious suns, each one a perfect sun. (Shak) I fear I am not in my perfect mind. (Shak) O most entire perfect sacrifice! (Keble) God made thee perfect, not immutable. (milton)

2. Well informed; certain; sure. I am perfect that the Pannonains are now in arms. (Shak)

3. (Science: botany) hermaphrodite; having both stamens and pistils; said of flower. Perfect cadence, 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.

(Science: mathematics) Perfect number, a tense which expresses an act or state completed.

Synonym: Finished, consummate, complete, entire, faultless, blameless, unblemished.

Origin: 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.