- the glow frequently seen in the sky after sunset; afterlight.
- a second or secondary glow, as in heated metal before it ceases to become incandescent.
- the pleasant remembrance of a past experience, glory, etc.: She basked in the afterglow of her stage triumph.
- phosphorescence (def. 3).
- the glow left after a light has disappeared, such as that sometimes seen after sunset
- the glow of an incandescent metal after the source of heat has been removed
- luminescence persisting on the screen of a cathode-ray tube or in a gas-discharge tube after the power supply has been disconnected
- a trace, impression, etc, of past emotion, brilliance, etc