One of the mysteries of the English language finally explained.
A fluorescent paint or other colouring.
- ‘This kit includes a heavy-gauge lunchbox, six colors of Day-Glo paint that glow in black light, a brush, plastic stencils and an illustrated tips and facts guide.’
- ‘This figure, too, is rendered in black silhouette on Day-Glo.’
- ‘Fluorescent materials (like Day-Glo paint) only glow when excited by the ultraviolet light.’
- ‘We had to go back and cut out the Day-Glo, then reapply it in the places where it worked.’
Very bright or fluorescent in colour.‘their clothing was marked with Day-Glo panels’
- ‘The Breeze-Man, decked out in some kind of bright orange Day-Glo sweatsuit, tells her to keep a good lookout.’
- ‘Thousands of police officers in Day-Glo jackets filled the city center.’
- ‘Have you still got that Day-Glo green Lycra dress?’
- ‘The walls have all been painted brown, I notice, and the bedroom doors are coloured an acutely mind-expanding Day-Glo orange.’
- ‘The Day-Glo cap he's loaned me is too big.’
- ‘Where a patch of blue sky is not blue enough, Hutchinson fills it in with a Day-Glo yellow marker.’
1950s: blend of day and glow.
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