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facultative

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adjective fac·ul·ta·tive \ˈfa-kəl-ˌtā-tiv, British -tə-tiv\

Definition of facultative

  1. 1 a :  of or relating to the grant of permission, authority, or privilege <facultative legislation> b :  optional

  2. 2 :  of or relating to a mental faculty

  3. 3 a :  taking place under some conditions but not under others <facultative diapause> b :  exhibiting an indicated lifestyle under some environmental conditions but not under others <facultative anaerobes>

fac·ul·ta·tive·ly adverb



Medical Dictionary

facultative

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adjective fac·ul·ta·tive \ˈfak-əl-ˌtāt-iv\

Medical Definition of facultative

  1. 1:  taking place under some conditions but not under others <facultative parasitism>

  2. 2:  exhibiting an indicated lifestyle under some environmental conditions but not under others <facultative anaerobes>

  3. fac·ul·ta·tive·ly adverb





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