This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The length of time for which an organism lives.

n. The length of time for which something exists or is current or valid.

n. the period during which something is functional (as between birth and death)

"They die within a day; their lifespan is accelerated because time works on them differently, just as time works differently on a Galapagos tortoise and a Rattus rattus."

time period    period of time    period   

hereafter    afterlife   

lifetime   

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