Antumbra

//ænˈtʌm.bɹə// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The region from which an occulting body appears entirely contained within the disc of the light source. rare

Synonyms

All synonyms
umbra

Etymology

From ante- (“before”) + umbra (“shadow”).

Related phrases

light source

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