cen·tric (s?n?tr?k) also cen·tri·cal (-tr?-k?l)adj.1. Situated at or near the center; central.2. Having a center.3. Having radially symmetrical valves. Used of diatoms.cen?tri·cal·ly adv.cen·tric?i·ty (s?n-tr?s??-t?) n.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.