Light-tight

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Impervious to light; excluding the light perfectly.

    "From a practical point of view it is not always possible to achieve an absolute lighttight home darkroom."

Adjective
  1. 1
    not penetrable by light wordnet

Synonyms

All synonyms
lightprooflightproof

Example

More examples

"The tech was asked to make a light-tight box."

Etymology

From light (noun) + tight (adjective).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.