Dictionary
de•fect
Pronunciation: (
—n.dē'fekt, di-fekt';
—v.di-fekt'), [key]—
n.
1. a shortcoming, fault, or imperfection:
a defect in an argument; a defect in a machine.
2. lack or want, esp. of something essential to perfection or completeness; deficiency:
a defect in hearing.
3. Also called
crystal defect, lattice defect. Crystall.a discontinuity in the lattice of a crystal caused by missing or extra atoms or ions, or by dislocations.
—
v.i.
to desert a cause, country, etc., esp. in order to adopt another (often fol. by
from or
to):
He defected from the U.S.S.R to the West. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.