We found 30 dictionaries that define the word senescent:

General (22 matching dictionaries)

1. senescent: Longman Dictionary of Contemporary English
2. senescent: Merriam-Webster
3. senescent: Oxford Learner's Dictionaries
4. senescent: American Heritage Dictionary of the English Language
5. senescent: Collins English Dictionary
6. senescent: Vocabulary.com
7. Senescent, senescent: Wordnik
8. senescent: Wiktionary
9. senescent: Webster's New World College Dictionary, 4th Ed.
10. senescent: The Wordsmyth English Dictionary-Thesaurus
11. senescent: Infoplease Dictionary
12. senescent: Dictionary.com
13. senescent: Online Etymology Dictionary
14. Senescent: Wikipedia, the Free Encyclopedia
15. Senescent: Online Plain Text English Dictionary
16. senescent: Webster's Revised Unabridged, 1913 Edition
17. senescent: Rhymezone
18. Senescent: AllWords.com Multi-Lingual Dictionary
19. senescent: FreeDictionary.org
20. senescent: The Phrontistery - A Dictionary of Obscure Words
21. senescent: Mnemonic Dictionary
22. senescent: TheFreeDictionary.com

Business (1 matching dictionary)

23. senescent: Legal dictionary

Computing (1 matching dictionary)

24. senescent: Encyclopedia

Medicine (3 matching dictionaries)

25. senescent: Merriam-Webster Medical Dictionary
26. online medical dictionary (No longer online)
27. senescent: Medical dictionary

Miscellaneous (2 matching dictionaries)

28. senescent: A Word A Day
29. senescent: Wordcraft Dictionary

Science (1 matching dictionary)

30. Botanical Terms (No longer online)

(Note: See senescence as well.)

Definitions from Wiktionary (senescent) ▸ adjective:  Growing old; decaying with the lapse of time. ▸ adjective:  Characteristic of old age. ▸ adjective:  (cytology, of a cell) That ceases to divide. Similar: aging, old, doddering, presenile, semidecaying, decayed, senile, progeroid, decrepit, bedraggled, more... Types: old, elderly, geriatric, ancient, decrepit, more... Adjectives: normal, more, already, late, benign Colors:     olive,     mustard,     sepia,     rust,     burnt sienna, more... ▸ Word origin ▸ Words similar to senescent ▸ Usage examples for senescent ▸ Idioms related to senescent ▸ Wikipedia articles (New!) ▸ Popular nouns described by senescent ▸ Words that often appear near senescent ▸ Rhymes of senescent ▸ Invented words related to senescent