Penumbral

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Of, or pertaining to, the penumbra. not-comparable
  2. 2
    Implied or logically following from something, but not directly stated. not-comparable

    "Relatedly, there are Fine's penumbral connections which reflect logical relations between indefinite sentences. He claims that, regarding a borderline red-pink blob, we are obliged to respect the truth of 'if the blob is to be red then it is not to be pink.'"

  3. 3
    Connected to a term, but not essential to its meaning. not-comparable

    "The meaning of the term 'preventive or enforcement action' has prompted considerable discussion. Given the lack of practice under Art. 5, the depth and detail of this debate may be surprising. As will be shown, the core meaning of the term seems clear enough, and while there are some doubts about the penumbral meaning, the Organization's unwillingness or inability to apply Art. 5 means that this is unlikely to be particularly relevant."

Adjective
  1. 1
    of or pertaining to the region of partial shadow around an umbra wordnet

Synonyms

All synonyms
accidentalshadowyshady

Antonyms

All antonyms
core

Example

More examples

"A penumbral lunar eclipse can be hard to see."

Etymology

From penumbra + -al.

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