Characterized by free-standing columns that stand forward from a wall (contrasted with columns in antis).

a temple with columns only at the front

a type of Greek temple which has a row of columns creating a porch in front of the anta

Prostyle is an architectural term defining free standing columns that are widely spaced apart in a row. The term is often used as an adjective when referring to the portico of a classical building which projects from the main structure. First used in Etruscan and Greek temples, the Romans later on incorporated this motif in their temples.