| Monad | n. [ L. monas, -adis, a unit, Gr. &unr_;, &unr_;, fr. mo`nos alone. ] 1. An ultimate atom, or simple, unextended point; something ultimate and indivisible. [ 1913 Webster ] 2. (Philos. of Leibnitz) 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. [ 1913 Webster ] 3. (Zool.) One of the smallest flagellate Infusoria; esp., the species of the genus Monas, and allied genera. [ 1913 Webster ] 4. (Biol.) A simple, minute organism; a primary cell, germ, or plastid. [ 1913 Webster ] 5. (Chem.) An atom or radical whose valence is one, or which can combine with, be replaced by, or exchanged for, one atom of hydrogen. [ 1913 Webster ]
Monad deme (Biol.), in tectology, a unit of the first order of individuality. [ 1913 Webster ]
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| Monadelphia | ‖n. pl. [ NL., from Gr. mo`nos alone + 'adelfo`s brother. ] (Bot.) A Linnaean class of plants having the stamens united into a tube, or ring, by the filaments, as in the Mallow family. [ 1913 Webster ] |
| Monadical | { } a. Of, pertaining to, or like, a monad, in any of its senses. See Monad, n. Dr. H. More. [ 1913 Webster ] Variants: Monadic |
