a coloring agent added to pigments, dyes, etc. to produce any of a variety of fluorescent colors
[alsoday-glo] designating, of, or like such a color or colors
A trademark for fluorescent coloring agents and materials. This trademark sometimes occurs in print in lowercase: “The troupe's staging … follows Alice's fantasy romp through day-glo daisies, past a smiling Cheshire cat” ( Los Angeles Times )
(comparative more dayglo, superlative most dayglo)
- Luminiscent; fluorescent; of colors, very bright.
- This term may be a trademark.