|1.||a lack of something necessary for completeness or perfection; shortcoming; deficiency|
|2.||an imperfection, failing, or blemish|
|3.||crystallog point defect See also dislocation a local deviation from regularity in the crystal lattice of a solid|
|4.||(intr) to desert one's country, cause, allegiance, etc, esp in order to join the opposing forces|
|[C15: from Latin dēfectus, from dēficere to forsake, fail; see |
defect de·fect (dē'fěkt', dĭ-fěkt')
A lack of or abnormality in something necessary for normal functioning; a deficiency or imperfection.