Tetrastyle
in architecture, having or consisting of four columns; having a portico consisting of four columns; as the Temple of Fortuna Virilis at Rome; a portico, etc., consisting of four columns. A cavædium was called tetrastyle when the beams of the compluvium were supported by columns placed over against the four angles of a court. thyology, the type genus of Tetrodon tina, having the upper and lower jaws divided by a mesial suture, so as to separate the dentition into four distinct por-