Synonyms for Porticoed (same or very similar meaning)
WordNet sense 1 (marked by columniation having free columns in porticoes either at both ends or at both sides of a structure):
amphiprostylar, amphiprostyle, amphistylarWordNet sense 2 (having columns at one or both ends but not along the sides):
apteralFrom the ODE community, based on WordNetadd/edit