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
2 a : 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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Medical Dictionary

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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