(intransitive) To abandon or turn against; to cease or change one's loyalty, especially from a military organisation or political party. / (military) To desert one's army, to flee from combat.

A fault or malfunction. / The quantity or amount by which anything falls short. / (mathematics) A part by which a figure or quantity is wanting or deficient.

Third-person singular simple present indicative form of defect

plural of defect

present participle of defect

simple past tense and past participle of defect

An act or incidence of defecting.

plural of defection

State or quality of being defective.

Alternative form of defectibility