ETYM Latin incandecens, -entis, p. pr. of incandescere to become warm or hot; pref. in- in + candescere to become of a glittering whiteness, to become red hot, incho. from candere to be of a glittering whiteness: cf. French incandescent. Related to Candle.
1. Characterized by ardent emotion or intensity or brilliance.
2. Emitting light as a result of being heated; SYN. candent.

Lightbulb.