We found 16 dictionaries that define the word penumbral:

General (11 matching dictionaries)

1. penumbral: Merriam-Webster
2. penumbral: Oxford Learner's Dictionaries
3. penumbral: Collins English Dictionary
4. penumbral: Vocabulary.com
5. penumbral: Wordnik
6. penumbral: Wiktionary
7. penumbral: Dictionary.com
8. penumbral: Rhymezone
9. penumbral: FreeDictionary.org
10. penumbral: Mnemonic Dictionary
11. penumbral: TheFreeDictionary.com

Business (2 matching dictionaries)

12. penumbral: Merriam-Webster Legal Dictionary
13. penumbral: Legal dictionary

Computing (1 matching dictionary)

14. penumbral: Encyclopedia

Medicine (2 matching dictionaries)

15. penumbral: Merriam-Webster Medical Dictionary
16. penumbral: Medical dictionary

(Note: See penumbra as well.)

Definitions from Wiktionary (penumbral) ▸ adjective:  Of, or pertaining to, the penumbra. Similar: umbral, pupillary, pupilar, perineurial, hemipenial, pectineal, perimetrial, parenchymal, subpallial, punctal, more... Opposite: umbra, full shadow, complete darkness Phrases: penumbral eclipse, Total penumbral lunar eclipse, more... ▸ Words similar to penumbral ▸ Usage examples for penumbral ▸ Idioms related to penumbral ▸ Wikipedia articles (New!) ▸ Popular nouns described by penumbral ▸ Words that often appear near penumbral ▸ Rhymes of penumbral ▸ Invented words related to penumbral