What is Defects?
Defects definition and meaning on Dictionary terms:
a shortcoming, fault, or imperfection: a defect in an argument; a defect in a machine.
lack or want, especially of something essential to perfection or completeness; deficiency: a defect in hearing.
Also called crystal defect, lattice defect. Crystallography. a discontinuity in the lattice of a crystal caused by missing or extra atoms or ions, or by dislocations.
verb (used without object)
to desert a cause, country, etc., especially in order to adopt another (often followed by from or to): He defected from the U.S.S.R to the West.