ultrablack

Fetched 2026-10-26 (cache).

Synonyms: ultraslick

Antonyms: ultraslick

Related words from Datamuse; suggestions, not definitions.

Noun

1. A substance that emits (reflects) less than 0.5% of the light incident upon it, in the specified spectral range; in the visible light spectrum.
2. {{&lit|en|ultra|black}}

Adjective

1. Having the property of disappearing (not returning) more than 99.5% of the light incident upon it, in the specified spectral range; in the visible light spectrum.
2. {{&lit|en|ultra-|black}}

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.