Defect

Defect can refer to:

in biology, the failure of an organism to develop properly.
in manufacturing, the failure of a product to conform to specification.
in software engineering, the non-conformance of software to its requirements, often, but incorrectly, called bug.
to abandon allegiance to one's country and go to another.
in geometry, the amount by which the sum of the angles at a vertex of a polyhedron falls short of a complete circle. If the sum of the angles exceeds a full circle, then the defect is negative. See defect (geometry).
in politics and/or a military context, the verb to defect refers to switching sides (see defector).

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