Intermediate mass stars are a bit of a tricky category. There isn't a hard and fast rule for their size, but here's a general idea:

* Mass: They typically range in mass from 2 to 8 solar masses.

* Size: Their size is difficult to define precisely because it changes over their lifetime. Early in their lives, they are slightly larger than our Sun. As they age, they expand significantly and become red giants.

* Comparison: To put it in perspective, our Sun is considered a low-mass star with a radius of about 695,000 kilometers (432,000 miles). An intermediate mass star at its initial stage might be slightly larger than that.

Note: The term "intermediate mass" is sometimes used in a broader context, encompassing stars between 1 and 10 solar masses.

It's important to remember that:

* Stellar sizes vary greatly even within the same mass category due to factors like age, composition, and rotation.

* The specific size of an intermediate mass star would depend on its individual properties.

Let me know if you want to explore more about the evolution of intermediate mass stars!