octastyle adjective & noun. 
['ɒktǝstʌɪl] Also 
octostyle. 
E18.[Latin octastylus adjective from Greek oktastulos, formed as OCTA-, OCTO- + stulos column.]Architecture. (A building or portico) having eight columns at the end or in front. 
 [TahlilGaran] English Dictionary ▲