amphiprostyle
adjective
am·phi·pro·style ˌam(p)-fi-ˈprō-ˌstī(-ə)l 
: having columns at each end only
an amphiprostyle building
amphiprostyle noun
Word History
Etymology
borrowed from Latin amphiprostȳlos, borrowed from Greek amphipróstȳlos, from amphi- amphi- + próstȳlos "having pillars in front," from pro- pro- entry 1 + -stȳlos, adjective derivative of stŷlos "pillar, support" — more at steer entry 2
First Known Use
circa 1789, in the meaning defined above