[noun dee-fekt, dih-fekt; verb dih-fekt] /noun ˈdi fɛkt, dɪˈfɛkt; verb dɪˈfɛkt/
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.
noun (dɪˈfɛkt; ˈdiːfɛkt)
a lack of something necessary for completeness or perfection; shortcoming; deficiency
an imperfection, failing, or blemish
(crystallog) a local deviation from regularity in the crystal lattice of a solid See also point defect, dislocation (sense 3)
(intransitive) to desert one’s country, cause, allegiance, etc, esp in order to join the opposing forces
early 15c., from Middle French defect and directly from Latin defectus “failure, revolt, falling away,” noun use of past participle of deficere “to fail, desert” (see deficient).
1570s, from Latin defectus, past participle of deficere “to fail, desert” (see defect (n.)). Related: Defected; defecting.
defect de·fect (dē’fěkt’, dĭ-fěkt’)
A lack of or abnormality in something necessary for normal functioning; a deficiency or imperfection.
noun, Radio. 1. a device for rectifying a modulated radio-frequency signal, consisting of a crystal of germanium, silicon, galena, or the like with a cat whisker contact, permitting a high-frequency current to pass freely in one direction only: one of the two principal components of a crystal set. noun 1. (electronics) a demodulator, used esp […]
- Crystal form
noun 1. (crystallog) a symmetrical set of planes in space, associated with a crystal, having the same symmetry as the crystal class Compare crystal habit
noun 1. the practice of staring into a crystal ball, as by a fortuneteller, to see distant happenings, future events, etc. 2. speculation about the future. noun 1. the act of staring into a crystal globe (crystal ball) supposedly in order to arouse visual perceptions of the future, etc 2. the act of trying to […]
- Crystal habit
noun 1. (crystallog) the external shape of a crystal Compare crystal form