quantum vis, Q.v., q.v. As much as you wish. Used in medical prescriptions. Don't confuse this q.v. with the Quod vide; (q.v.) meaning, 'which [you should] see'. Found on http://www.wordinfo.info/words/index/info/view_unit/3479/
Quod vide, q.v., Q.V. Which [you should] see. Used when the writer wants the reader to see a specific cross-reference. Always use q.v. in parenthesis (q.v.) after the desired reference. Found on http://www.wordinfo.info/words/index/info/view_unit/3479/4