Day-Glo

[ dey-gloh ]
/ ˈdeɪˌgloʊ /

Trademark.

a brand of pigments and other products that exhibit fluorescence in daylight.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for day-glo

Day-Glo


noun

trademark
  1. a brand of fluorescent colouring materials, as of paint
  2. (as modifier)Day-Glo colours
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012