-
Quaque hora: every hour - used in medical pharmacy prescriptions usually with a numeral defining hours between doses. "q4h" read as: "taken every 4 hours". Also common is the format: "3 caps q4h" read as" means "Take 3 capsules every 4 hours."
(initialism)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License