1. Circular or spherical.
2. Botany Circular and flat. Used especially of leaves.
[Middle English orbiculer, from Old French orbiculaire, from Late Latin orbiculāris, from Latin orbiculus, diminutive of orbis, circle, disk; see orbh- in the Appendix of Indo-European roots.]
or·bic′u·lari·ty (-lărĭ-tē) n.
(click for a larger image)orbicular
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.