Which option correctly expands the abbreviation TID?

Which option correctly expands the abbreviation TID?

• A. Two times a day
• B. Four times a day
• C. Every eight hours
• D. Three times a day

Answer: (D)

TID comes from the Latin ter in die, meaning three times within a 24-hour day. So the correct expansion is three times a day. The other options describe different dosing patterns: two times a day is BID (bis in die), four times a day is QID (quater in die), and “every eight hours” is an interval schedule (about three doses in a day) but it isn’t the literal expansion of the acronym TID.

TID comes from the Latin ter in die, meaning three times within a 24-hour day. So the correct expansion is three times a day.

The other options describe different dosing patterns: two times a day is BID (bis in die), four times a day is QID (quater in die), and “every eight hours” is an interval schedule (about three doses in a day) but it isn’t the literal expansion of the acronym TID.