Imperfect word meaning and definition

[noun] a tense of verbs used in describing action that is on-going
[adjective] having the attributes of man as opposed to e.g. divine beings; "I'm only human"; "frail humanity"
[adjective] not perfect; defective or inadequate; "had only an imperfect understanding of his responsibilities"; "imperfect mortals"; "drainage here is imperfect"

\Im*per"fect\, a. [L. imperfectus: pref. im- not + perfectus perfect: cf. F imparfait, whence OE. imparfit. See {Perfect}.] 1. Not perfect; not complete in all its parts; wanting a part; deective; deficient. Something he left imperfect in the state. --Shak. Why, then, your other senses grow imperfect. --Shak. 2. Wanting in some elementary organ that is essential to successful or normal activity. He . . . stammered like a child, or an amazed, imperfect person. --Jer. Taylor. 3. Not fulfilling its design; not realizing an ideal; not conformed to a standard or rule; not satisfying the taste or conscience; esthetically or morally defective. Nothing imperfect or deficient left Of all that he created. --Milton. Then say not man's imperfect, Heaven in fault; Say rather, man's as perfect as he ought. --Pope. {Imperfect arch}, an arch of less than a semicircle; a skew arch. {Imperfect cadence} (Mus.), one not ending with the tonic, but with the dominant or some other chord; one not giving complete rest; a half close. {Imperfect consonances} (Mus.), chords like the third and sixth, whose ratios are less simple than those of the fifth and forth. {Imperfect flower} (Bot.), a flower wanting either stamens or pistils. --Gray. {Imperfect interval} (Mus.), one a semitone less than perfect; as, an imperfect fifth. {Imperfect number} (Math.), a number either greater or less than the sum of its several divisors; in the former case, it is called also a {defective number}; in the latter, an {abundant number}. {Imperfect obligations} (Law), obligations as of charity or gratitude, which cannot be enforced by law. {Imperfect power} (Math.), a number which can not be produced by taking any whole number or vulgar fraction, as a factor, the number of times indicated by the power; thus, 9 is a perfect square, but an imperfect cube. {Imperfect tense} (Gram), a tense expressing past time and incomplete action.
\Im*per"fect\, n. (Gram.) The imperfect tense; or the form of a verb denoting the imperfect tense.
\Im*per"fect\, v. t. To make imperfect. [Obs.]

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