a. rare. [f. as next + -AN.] = QUATERNARY a. 1.

1

1647.  M. Hudson, Div. Right Govt., I. vi. 55. A quaternarian number, as four beasts, and four wheels.

2

1856–8.  W. Clark, Van der Hoeven’s Zool., I. 108. Arrangement of parts usually quaternarian.

3