Mid (prefix)

1. Denoting the middle position or point.
2. Denoting a point or period of time halfway between the beginning and end of something.
3. Denoting the middle stage or level of something.

Origin:

From middle english mid-, from old english mid-, from proto-germanic *midjaz (“middle”), from proto-indo-european *medʰy- (“middle”).

Examples:

1. The mid-Atlantic region of the United States includes Delaware, Maryland, and Virginia.
2. The mid-term exams are scheduled for next week.
3. The mid-level management team is responsible for implementing the company's policies and procedures.
4. The mid-point of the movie was the most exciting part.
5. The mid-range model of the car is the most popular among consumers.