photochromic lens
[ fō′tə-krō′mĭk ]
n.
A light-sensitive eyeglass lens that automatically darkens in sunlight and clears in reduced light.
Words nearby photochromic lens
photochemical,
photochemical smog,
photochemistry,
photochemotherapy,
photochromic,
photochromic lens,
photochromy,
photochronograph,
photocoagulation,
photocoagulator,
photocompose