free-living

adjective
free-liv·ing | \ ˈfrē-ˈli-viŋ \

Definition of free-living 

1 : marked by more than usual freedom in the gratification of appetites

2a : not fixed to the substrate but capable of motility a free-living protozoan

b : being metabolically independent : neither parasitic nor symbiotic a free-living adult hairworm

First Known Use of free-living

1818, in the meaning defined at sense 1

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The first known use of free-living was in 1818

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free-living

adjective
free-liv·ing | \ ˈfrē-ˈliv-iŋ \

Medical Definition of free-living 

1 : not fixed to the substrate but capable of motility a free-living protozoan

2 : being metabolically independent : neither parasitic nor symbiotic

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