lightproof

[ lahyt-proof ]
/ ˈlaɪtˌpruf /

adjective

impervious to light: a lightproof film cartridge.

Origin of lightproof

First recorded in 1920–25; light1 + -proof

Example sentences from the Web for lightproof

  • This incredible blackness made a lightproof wall for the recessed hollow at the foot of the cliff.

    Planet of the Damned |Harry Harrison