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facultative

fac·ul·ta·tive [ ˈfa-kəl-ˌtā-tiv]

facultative

adjective

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

Dictionary Entries near facultative

facultative referendum

faculty

faculty psychology

More Definitions forfacultative

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