We found 20 dictionaries that define the word life span:

General (11 matching dictionaries)

1. life span: Merriam-Webster
2. life span: Oxford Learner's Dictionaries
3. life span: American Heritage Dictionary of the English Language
4. life span: Collins English Dictionary
5. life-span: Wordnik
6. life span: Wiktionary
7. life span: The Wordsmyth English Dictionary-Thesaurus
8. life span: Infoplease Dictionary
9. life span: Dictionary.com
10. Life-span, Life span: Wikipedia, the Free Encyclopedia
11. life span: TheFreeDictionary.com

Business (2 matching dictionaries)

12. life span: Legal dictionary
13. Life-span: Financial dictionary

Computing (1 matching dictionary)

14. Life-span, life span: Encyclopedia

Medicine (3 matching dictionaries)

15. life span: Merriam-Webster Medical Dictionary
16. Life span: Merck Manuals
17. Life-span, life span: Medical dictionary

Miscellaneous (1 matching dictionary)

18. Glossary of Population Terms (No longer online)

Science (2 matching dictionaries)

19. Fishkeeping glossary (No longer online)
20. Anthropology dictionary (No longer online)

Definitions from Wiktionary (Life span) ▸ noun:  Alternative spelling of lifespan. [The length of time for which an organism lives.] Similar: life-time, lifecycle, shelflife, life-style, life style, mid-lifer, seculum, life lore, life-lore, life-force, more... Opposite: death, mortality Types: short, average, long, exceptional, more... Phrases: expected life span, mean life span, average life span, Maximum life span, condition of having a finite life span, more... Adjectives: life long, hourslong, longterm, longstanding, longlived, decadelong, yearslong, longrunning, long-haul, longrange, monthslong ▸ Words similar to life span ▸ Usage examples for life span ▸ Idioms related to life span ▸ Wikipedia articles (New!) ▸ Words that often appear near life span ▸ Rhymes of life span ▸ Invented words related to life span