tetradoron

Updated: May 27, 2025

First, the kind called in Greek Lydian, being that which our people use, a foot and a half long and one foot wide. The other two kinds are used by the Greeks in their buildings. A brick five palms square is called "pentadoron"; one four palms square "tetradoron." With these bricks there are also half-bricks.

Vitruvius Pollio - The Ten Books on Architecture