amphistylar

adjectives

having columns either at both ends or at both sides
amphistylar
is similar to
having or resembling columns; having columns of a specified kind (often used as a combining form)
"a columned portico"; "trees with columned trunks"; "white-columned houses"
columned
marked by columniation having free columns in porticoes either at both ends or at both sides of a structure
amphiprostylar, amphiprostyle, amphistylar, porticoed