Bible Dictionaries
Quaternion

Smith's Bible Dictionary

Quaternion. A military term, signifying a guard of four soldiers, two of whom were attached to the person of a prisoner, while the other two kept watch, outside the door of his cell. Acts 12:4.

Bibliography Information
Smith, William, Dr. Entry for 'Quaternion'. Smith's Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​sbd/​q/quaternion.html. 1901.