Meaning of DEFECT in English

DEFECT

noun , verb

■ noun

/ ˈdiːfekt; NAmE ; dɪˈfekt/ a fault in sth or in the way it has been made which means that it is not perfect :

a speech defect

a defect in the glass

■ verb

/dɪˈfekt/ [ v ] defect (from sth) (to sth) to leave a political party, country, etc. to join another that is considered to be an enemy

►  de·fec·tion / dɪˈfekʃn; NAmE / noun [ U , C ] defection (from sth) (to sth) :

There have been several defections from the ruling party.

►  de·fect·or noun

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WORD ORIGIN

noun late Middle English (as a noun, influenced by Old French defect deficiency): from Latin defectus , past participle of deficere desert or fail, from de- (expressing reversal) + facere do.

verb late 16th cent.: from Latin defect- failed, from the verb deficere desert or fail, from de- (expressing reversal) + facere do.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.