Usage examples (37)

• By the way, the "photochromic" sun specs which darken under UV exposure aren't quite the miracle claimed by their makers.
• April 28th, 2009 WASHINGTON - A revolutionary 'photochromic' material developed by Japanese researchers changes colour instantaneously when exposed to light.
• Everything was built into the MHW and secured as tightly as the photochromic visor.
• For years, photochromic lenses were too dark indoors, too light outdoors, and nerdy everywhere.