facultative

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

Definition of facultative 

1a : of or relating to the grant of permission, authority, or privilege facultative legislation

b : optional

2 : of or relating to a mental faculty

3a : 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

Other words from facultative

facultatively adverb

First Known Use of facultative

1820, in the meaning defined at sense 1a

History and Etymology for facultative

borrowed from French & New Latin; French facultatif, borrowed from New Latin facultātīvus, from Medieval Latin facultāt-, facultās "ability, power, authority, privilege, right" (Latin, "ability, power") + Latin -īvus -ive — more at faculty

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The first known use of facultative was in 1820

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More Definitions for facultative

facultative

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

Medical 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

Other words from facultative

facultatively adverb

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