lightless meaning

UK US

lightless (adjective): giving no light.

lightless has 2 meanings in this dictionary.

lightless as an adjective

  1. giving no light
    • lightless stars `visible' only to radio antennae

    Similar: invisible

    Related forms: lightlessness

  2. without illumination
    • came up the lightless stairs
    • the unilluminated side of Mars
    • through dark unlighted (or unlit) streets

    Synonyms: unilluminated, unlighted, unlit

    Similar: dark

    Related forms: lightlessness

Word lists: words starting with LI · words ending in SS · 9-letter words

More about lightless on Wikipedia.