Mid/mɪd/ Definition 1 of 3Pro Tip 1/3Specific Timeframe Often used to describe a more precise point within a broader time period. The project is due in mid-March. Pro Tip 2/3Event Approximation Used to estimate when events occur without a specific date. The festival takes place in mid-summer. Pro Tip 3/3Periods Not Moments 'Mid' refers to a period of time within a larger one, not a precise moment. She'll return from her trip in mid-February.