Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

quăternĭo, ōnis, m. [quaterni], the number four, a quaternion, Mart. Cap. 7, § 767.
Esp.,

  1. B. On dice, a quatre (postclass.), Isid. 18, 65.
  2. C. A body of four soldiers, a quaternion, Vulg. Act. 12, 4.