monosymmetric,a.|ˈmɒnəʊsɪˈmɛtrɪk| [f. mono- + symmetric.] a.Cryst.= monoclinic. 1880in Webster Suppl.1887Athenæum 10 Sept. 345/2 [Graphite occurs] in tabular crystals so indistinctly formed as to render it uncertain whether they belong to the hexagonal or monosymmetric system. b.Bot.= next. 1890in Century Dict.