Final answer:
A colonnade is a series of regularly spaced columns supporting an entablature and usually one side of a roof structure. It creates visual rhythm and a sense of grandeur in architectural design.
Step-by-step explanation:
The term for a series of regularly spaced columns supporting an entablature and usually one side of a roof structure is colonnade.
A colonnade consists of a row of columns and beams, creating a visually rhythmic and grand effect. It can be free-standing or part of a larger structure, and is commonly found in Egyptian, Greek, and Roman architectural design.