pridie

Etymology
A contracted form of +

Adverb

 * 1) On the day before
 * 2) * Cicero, Att., 5.11.6:
 * ...pridie quam ego Athenas veni...
 * ...on the day before I came to Athens...
 * ...pridie Kalendas Februarias...
 * ...on the day before the February calends...

Usage notes
Used particularly in Roman dating for the day before the calends, nones , or ides of each month.

Treated as an absolute followed by a noun in the accusative case or and its clause. In classical Latin, followed by a genitive only in the fixed expression pridie.