LUMEN • E-FREE TRANSLATION.COM • Definition of Lumen

... military chieftain in his youth, promptly took the field at the head of his flock, many of whom were but newly baptized. It was Easter Eve, and he took advantage of the sacred ceremonies of that holy season, which were then actually performed by night. From the New Fire, the "Lumen Christi," was kindled a line of beacons along the Christian lines, and when Germanus intoned the threefold Easter Alleluia, the familiar strain was echoed from lip to lip throughout the host. Stricken with panic at the ...

— Early Britain—Roman Britain • Edward Conybeare