Definition from Wiktionary, the free dictionary
From Latin ulter, originally the masculine ablative.
ultrō (not comparable)
- to the farther side, beyond, on the other side
- (with citro) to and fro, back and forth, on this side and on that
- afar, away, off
- besides, moreover, too, over and above
- conversely, on the other hand
- (figuratively) superfluously, gratuitously, wantonly
- (figuratively) of one's own accord, without being asked, spontaneously, voluntarily, freely
- “ultro” in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879.