Also found in: Dictionary, Acronyms, Wikipedia.
L. quaque die, every day.
CAUTION!Most experts in the prevention of health care errors recommend that the abbreviation q.d. be written out as “daily” in order to prevent communication errors. q.d may be confused with q.i.d (four times a day), a mistake that could result in an unintentional overdose.
Medical Dictionary, © 2009 Farlex and Partners