‖ monocephalusTeratol.|mɒnəʊˈsɛfələs| [mod.L., see prec.Cf. F. monocéphalien (Littré).] A double monster having one head and two bodies more or less completely blended together. 1882in Ogilvie; and in later Dicts. So monoˈcephaly(seequot.). 1891Syd. Soc.Lex., Monocephaly, the condition of a Monocephalus.