aequinoctium

aequinoctium ī, n

aequus + nox, the equinox : dies aequinoctii: vernum, L.

Aequinoctium
AEQUINOC´TIUM or AEQUINOG´TIAE(Fischament), a Roman fort in Upper Pannonia, situated upon the Danube...

Dictionary of Greek and Roman Geography
aequinoctium
aequĭnoctĭum, i, n. [aequus-nox], the time of equal days and nights , the equinox , Cic. Att. 12,...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.