unactinic

English

Etymology

From un- +‎ actinic.

Adjective

unactinic (not comparable)

1. Not actinic.
   • 1884, American Druggist, volume 13, page 233:

     If the bottles are new, however, or the nature of their previous contents exactly known, the dispenser will sometimes prefer them even to the best unactinic glass in existence.

   • 1917, Camera Craft, volume 24, page 50:

     Every photographer knows quite well how perfectly the vision accommodates itself, in about half an hour, to the feeble unactinic light of the dark-room.