-cephaloussuff. Having a specified kind of head or number of heads: dicephalous.[From Greek -kephalos, from kephal?, head; see ghebh-el- in Indo-European roots.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.-cephalous or -cephalic, a combining form meaning ?having a head or heads? of the specified sort or number: oxycephalous. [