The term "700c" refers to a specific size of bicycle tire and rim. It is commonly used in road bikes and is part of the French tire sizing system. The "700" indicates the approximate outer diameter of the tire in millimeters, while the "c" denotes the width category, which is typically narrower than other sizes. In the context of bicycle components, 700c tires are designed for smooth pavement and provide a balance of speed and comfort. They are compatible with various rim widths, making them a popular choice among cyclists for both recreational and competitive riding.