n. [ Jap., usually translated as crest. ] (Japan) The badge of a family, esp. of a family of the ancient feudal nobility. The most frequent form of the mon is circular, and it commonly consists of conventionalized forms from nature, flowers, birds, insects, the lightnings, the waves of the sea, or of geometrical symbolic figures; color is only a secondary character. It appears on lacquer and pottery, and embroidered on, or woven in, fabrics. The imperial chrysanthemum, the mon of the reigning family, is used as a national emblem. Formerly the mon of the shoguns of the Tokugawa family was so used. [ Webster 1913 Suppl. ]

Same as Mono-. [ 1913 Webster ]

{ . [ Gr. &unr_;. ] A prefix signifying one, single, alone; as, monocarp, monopoly; (Chem.) indicating that a compound contains one atom, one radical, or one group of that to the name of which it is united; as, monoxide, monosulphide, monatomic, etc. [ 1913 Webster ]

‖n. [ CF. Sp. & Pg. mona, fem. of mono a monkey, ape. ] (Zool.) A small, handsome, long-tailed West American monkey (Cercopithecus mona). The body is dark olive, with a spot of white on the haunches. [ 1913 Webster ]

a. [ L. monachus a monk: cf. F. monacal. See Monk. ] Of or pertaining to monks or a monastic life; monastic. [ 1913 Webster ]

n. [ Cf. F. monachisme. ] The system and influences of a monastic life; monasticism. [ 1913 Webster ]

n. (Chem.) An acid having one replaceable hydrogen atom.
Syn. -- monoacid. [ PJC ]

a. [ Mon- + acid. ] (Chem.) Having one hydrogen atom replaceable by an acidic atom or radical.
Syn. -- monoacid, monoacidic, monacidic. [ 1913 Webster ]

2. Capable of neutralizing one equivalent of a monobasic acid; -- said of bases, and of certain metals. [ 1913 Webster ]

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 ]

‖n. pl. [ NL. See Monad. ] (Zool.) The Infusoria. [ 1913 Webster ]