The story
Coined by the Day-Glo Color Corp., originally as a trademark, from day + glow.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Very bright and luminous in colour. Full definition →
Coined by the Day-Glo Color Corp., originally as a trademark, from day + glow.
Etymology from Wiktionary, CC BY-SA 4.0.