01 a. Not complete; not filled up; not finished; not having all its parts, or not having them all adjusted; imperfect; defective.
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1.
Not complete; not filled up; not finished; not having all its parts, or not having them all adjusted; imperfect; defective.“A most imperfect and incomplete divine.” — Milton.
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2.
Wanting any of the usual floral organs; -- said of a flower.(Bot.)
Phrases & compounds
Incomplete equation —
an equation some of whose terms are wanting; or one in which the coefficient of some one or more of the powers of the unknown quantity is equal to 0.