Dipteral is an architectural term that describes a building with a double row of columns on each side. There are several synonyms for dipteral, including biforate, which refers to a building or structure with two arches or openings, and double-collared, which refers to a building with two rows of columns. Another synonym is amphiprostylos, which describes a temple with columns at both the front and back. Additionally, dipylon is a synonym for dipteral that specifically refers to the Ancient Greek Dipylon gate, which was a monumental gateway constructed in Athens during the 8th century BCE.