From Longman Dictionary of Contemporary Englishunder ... conditions/circumstancesunder ... conditions/circumstancesif something happens under particular conditions, it happens when those conditions exist I wish I’d met him under different circumstances. The system operates well under normal conditions. → under
Examples from the Corpus
under ... conditions/circumstances• And yet there are those who still would not turn in a relative under any circumstances.• Despite these difficulties, however, a number of workers have successfully demonstrated effects of homoeopathic remedies under experimental conditions.• In goal, Peter Liles gave a solid performance under very testing conditions.• Under normal conditions, approximately 65 percent of salt and water is reabsorbed at this site.• How, under these circumstances, could I have been disappointed?• Under these circumstances it was hardly surprising that the police adopted a laissez-faire policy.• Under less sanguine circumstances, loans are advanced more cautiously.• Under what circumstances will this separation work? 