What is a common abbreviation for "three times a day"?

The abbreviation for "three times a day" is TID, which stands for "ter in die" in Latin. This designation is commonly used in medical prescription contexts to indicate that a medication should be taken three times throughout the day, typically spaced evenly apart to maintain consistent therapeutic levels in the body.

In contrast, other abbreviations serve different purposes: QD means "once a day," BID indicates "twice a day," and QID refers to "four times a day." Thus, TID specifically communicates the requirement for medication administration three times daily, making it essential to understand in order to follow medical instructions accurately and ensure patient safety.