lighttight
/ˈlaɪtˌtaɪt/
adjective
- Designed to prevent any light from entering or escaping; completely sealed against light.
- The darkroom door was lighttight, so no light could ruin the photographs.
- The photographer used a lighttight bag to load film in bright sunlight.
- The laboratory required lighttight containers to store light-sensitive chemicals.
Antonyms