λαμπρότης G2987
lamprótēs · lam-prot'-ace · Noun Feminine
from λαμπρός; brilliancy:--brightness.
1 Occurrence in the King James Bible
Acts 26:13At midday, O king, I saw in the way a light from heaven, above the brightness of the sun, shining round about me and them which journeyed with me.