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Timing Abbreviations
Med Term, Timing Abbreviations
Term | Definition |
---|---|
BID | twice daily, from the Latin phrase bis in die which means "two in a day" |
TID | three times daily, from the Latin phrase ter in die which means three in a day |
Q | every x (example: Q4hr is every 4 hours, Q3 is every 3 days) |
QD | daily, from the Latin phrase quaque die which means "each day" (now prohibited from many health care settings due to confusion) |
QID | four times daily, from the Latin phrase quater in die which means "four in a day" (now prohibited from many health care settings due to confusion) |
QHS | at night, from Latin phrase quaquehora somni which means "each night at the hour of sleep |
AC | before meals, from the Latin phrase ante cibum which means "before food" |
PC | after meals, from the Latin phrase post cibum which means "after food" |
prn | as needed, from the Latin phrase per re nata which means "as the need arises" |
ad lib | as desired |