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We found 44 dictionaries with English definitions that include the word penumbra:
Click on the first link on a line below to go directly to a page where "penumbra" is defined.

General dictionaries General (30 matching dictionaries)
  1. penumbra: Merriam-Webster.com [home, info]
  2. penumbra: Oxford Learner's Dictionaries [home, info]
  3. penumbra: American Heritage Dictionary of the English Language [home, info]
  4. penumbra: Collins English Dictionary [home, info]
  5. penumbra: Vocabulary.com [home, info]
  6. penumbra: Macmillan Dictionary [home, info]
  7. Penumbra, penumbra: Wordnik [home, info]
  8. penumbra: Wiktionary [home, info]
  9. penumbra: Webster's New World College Dictionary, 4th Ed. [home, info]
  10. penumbra: The Wordsmyth English Dictionary-Thesaurus [home, info]
  11. penumbra: Infoplease Dictionary [home, info]
  12. penumbra: Dictionary.com [home, info]
  13. penumbra: Online Etymology Dictionary [home, info]
  14. penumbra: UltraLingua English Dictionary [home, info]
  15. Penumbra (band), Penumbra (disambiguation), Penumbra (law), Penumbra (medicine), Penumbra (video game series), Penumbra: Wikipedia, the Free Encyclopedia [home, info]
  16. Penumbra: Online Plain Text English Dictionary [home, info]
  17. penumbra: Webster's Revised Unabridged, 1913 Edition [home, info]
  18. penumbra: Rhymezone [home, info]
  19. Penumbra: AllWords.com Multi-Lingual Dictionary [home, info]
  20. penumbra: Webster's 1828 Dictionary [home, info]
  21. penumbra: Hutchinson's Dictionary of Difficult Words [home, info]
  22. Penumbra: 1911 edition of the Encyclopedia Britannica [home, info]
  23. penumbra: Free Dictionary [home, info]
  24. penumbra: Hutchinson Dictionaries [home, info]
  25. penumbra: Mnemonic Dictionary [home, info]
  26. penumbra: WordNet 1.7 Vocabulary Helper [home, info]
  27. penumbra: LookWAYup Translating Dictionary/Thesaurus [home, info]
  28. penumbra: Dictionary/thesaurus [home, info]

Art dictionaries Art (1 matching dictionary)
  1. penumbra: ArtLex Lexicon of Visual Art Terminology [home, info]

Business dictionaries Business (2 matching dictionaries)
  1. penumbra: Glossary of Legal Terms [home, info]
  2. penumbra: Legal dictionary [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. Penumbra (Sun), penumbra: Encyclopedia [home, info]

Medicine dictionaries Medicine (2 matching dictionaries)
  1. penumbra: online medical dictionary [home, info]
  2. penumbra: Medical dictionary [home, info]

Miscellaneous dictionaries Miscellaneous (1 matching dictionary)
  1. penumbra: Wordcraft Dictionary [home, info]

Science dictionaries Science (3 matching dictionaries)
  1. Penumbra: Extragalactic Astronomy [home, info]
  2. penumbra: Nine Planets Glossary [home, info]
  3. PENUMBRA, PENUMBRA: Zoom Astronomy Glossary [home, info]

Slang dictionaries Slang (1 matching dictionary)
  1. Penumbra: Urban Dictionary [home, info]

Tech dictionaries Tech (3 matching dictionaries)
  1. penumbra: Lighting Design Glossary [home, info]
  2. Penumbra: National Weather Service Glossary [home, info]
  3. penumbra: SOLAR-TERRESTRIAL TERMS [home, info]

(Note: See penumbras for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (penumbra)

noun:  a fringe region of partial shadow around an umbra

▸ Also see penumbras
Word origin

Words similar to penumbra

Usage examples for penumbra

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Rhymes of penumbra

Invented words related to penumbra

Phrases that include penumbra:   falcatula penumbra, geometric penumbra, penumbra geometric, penumbra theatre company more...

Words similar to penumbra:   penumbrae, penumbral, aura, more...

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