Strong's #1823: exastrapto (pronounced ex-as-trap'-to)
from 1537 and 797; to lighten forth, i.e. (figuratively) to be radiant (of very white garments):--glistening.
Thayer's Greek Lexicon:
1) to send forth lightning, to lighten
2) to flash out like lightning, to shine, be radiant
2a) of garments
Part of Speech: verb
Relation: from G1537 and G797
This word is used 1 times:
Luke 9:29: "his raiment was white and glistering."