quăternārĭus

a, um, adj.

quaterni

I. consisting of four each, containing four, quaternary (post-Aug.): scrobes quaternarii, hoc est quoquoversus pedum quattuor, Col. 11, 2, 28: numerus, Plin. 28, 6, 17, § 64: formae, of coins, Lampr. Alex. Sev. 38.
Lewis & Short
A Latin Dictionary, 1879
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