Having eight frontal columns in the portico, as in some Greek temples. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "octastyle" in a sentence
"A third method of designating or distinguishing the temples is by the number of columns in front, thus temples are called tetrastyle, hexastyle, octastyle, that is having five, six, or eight columns."
"If an octastyle is to be constructed, let the front be divided into twenty-four parts and a half."
"Then, whether the temple is to be tetrastyle, hexastyle, or octastyle, let one of these parts be taken, and it will be the module."