- (a.) Of such a character as to admit of existing under various forms or conditions or of happening or not happening or the like;.
- (a.) Having the power to live under different conditions; as, a facultative parasite, a plant which is normally saprophytic, but which may exist wholly or in part as a parasite; -- opposed to obligate.
- (a.) Having relation to the grant or exercise faculty or authority, privilege, license or the like hence, optional; as, facultative enactments or those which convey a faculty or permission; the facultative referendum of Switzerland is one that is optional with the people and is necessary only when demanded by petition; facultative studies; -- opposed to obligatory and compulsory, and sometimes used with to.
- (a.) Pertaining to a faculty or faculties.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). facultative. Retrieved September 23, 2026, from http://smartdefine.org/facultative/definitions/2006710 |
| Chicago | Webster's. 2011. "facultative" http://smartdefine.org/facultative/definitions/2006710 (accessed September 23, 2026). |
| Harvard | Webster's 2011, facultative, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/facultative/definitions/2006710>. |
| MLA | Webster's. "facultative" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/facultative/definitions/2006710> |