Webster's Revised Unabridged Dictionary · 1913

Tetrastyle

Tetrastyle , adjective

[Latin tetrastylon, Greek {not transcribed} with four pillars in front; te`tra- (see Tetra-) + {not transcribed} a column.]

(Architecture) Having four columns in front; -- said of a temple, portico, or colonnade.
(Architecture) A tetrastyle building.