Monoimos an Arabian heretic of the 2d century, who appears to have been a follower of Basilides. He is mentioned by Theodoret; but the particulars of his system, which was formed of strange geometrical and arithmetical speculations respecting the origin of the world, are given only by Hippolytus. The substance of these is that primal man is the universe; that the universe is the originating cause of all things, he himself being unbegotten, incorruptible, and eternal; that a son of the primal man was generated independently of time; that the Son of man is a monad represented by the iota and the tittle — that is, the Greek figure 10 (t); that all things have emanated from the substance of this monad; that cubes, octahedrons, pyramids, and all such figures, out of which crystallize fire, water, and earth, have arisen from numbers which are comprehended in the number 10. In a letter from Monoimos to Theophrastus, which is quoted by Hippolytus, the former avows that he believed in no God separate from man's own self. See Hippolytus, Refut. Haer. 8:5-8; 10:13; Theodoret, Hazer.-fab. 1:18; Taylor. Hippolytus, page 106.