- (n.) An atom or radical whose valence is one or which can combine with, be replaced by or exchanged for, one atom of hydrogen.
- (n.) One of the smallest flangellate Infusoria; especially, the species of the genus Monas, and allied genera.
- (n.) The elementary and indestructible units which were conceived of as endowed with the power to produce all the changes they undergo, and thus determine all physical and spiritual phenomena.
- (n.) An ultimate atom or simple, unextended point; something ultimate and indivisible.
- (n.) A simple, minute organism; a primary cell, germ or plastid.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). monad. Retrieved September 20, 2026, from http://smartdefine.org/monad/definitions/2033964 |
| Chicago | Webster's. 2011. "monad" http://smartdefine.org/monad/definitions/2033964 (accessed September 20, 2026). |
| Harvard | Webster's 2011, monad, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/monad/definitions/2033964>. |
| MLA | Webster's. "monad" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/monad/definitions/2033964> |