tetrastyle

CIDE DICTIONARY

tetrastyle, a. [L. tetrastylon, Gr. with four pillars in front; te`tra- (see Tetra-) + a column.].

 Having four columns in front; -- said of a temple, portico, or colonnade.  [1913 Webster]

OXFORD DICTIONARY

tetrastyle, n. & adj.
--n. a building with four pillars esp. forming a portico in front or supporting a ceiling.
--adj. (of a building) built in this way.

Etymology

L tetrastylos f. Gk tetrastulos (as TETRA-, STYLE)