Definition of facultative
1a : of or relating to the grant of permission, authority, or privilege facultative legislationb : optional
2 : of or relating to a mental faculty
3a : taking place under some conditions but not under others facultative diapauseb : exhibiting an indicated lifestyle under some environmental conditions but not under others facultative anaerobes
facultatively
adverbExplore M-W
1820
First Known Use of facultative
1820
Medical Dictionary
facultative
playMedical Definition of facultative
1: taking place under some conditions but not under others facultative parasitism
2: exhibiting an indicated lifestyle under some environmental conditions but not under others facultative anaerobes
facultatively
adverbLearn More about facultative
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See words that rhyme with facultative Nglish: Translation of facultative for Spanish speakers Britannica English: Translation of facultative for Arabic speakers
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