free-living
Americanadjective
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following a way of life in which one freely indulges the appetites, desires, etc.
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Biology. noting an organism that is neither parasitic, symbiotic, nor sessile.
adjective
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given to ready indulgence of the appetites
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(of animals and plants) not parasitic; existing independently
Other Word Forms
- free-liver noun
Etymology
Origin of free-living
First recorded in 1810–20
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Scientists have identified around 400 species of free-living amoebae, but only six are known to cause disease in humans - including Naegleria fowleri and Acanthamoeba, both of which can infect the brain.
From BBC • Sep. 17, 2025
It’s also a parasite — because who needs to be free-living when you’re this fabulous?
From Salon • May 27, 2025
And most recently, some of those species again traded their ability to make silk for a free-living, clinging life in these faster waters.
From Science Magazine • Jan. 12, 2024
These power plants inside our cells descended from what were once free-living bacteria.
From Science Daily • Nov. 8, 2023
These factories exist in plant and animal cells today but may once themselves have been free-living cells.
From "Cosmos" by Carl Sagan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
