defectyoudaoicibaDictYouDict[defect 词源字典]
defect: see deficient
[defect etymology, defect origin, 英语词源]
defect (n.)youdaoicibaDictYouDict
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).
defect (v.)youdaoicibaDictYouDict
1570s, from Latin defectus, past participle of deficere "to fail, desert" (see defect (n.)). Related: Defected; defecting.