a. Of or relating to the eye: ocular exercises; ocular muscles.
b. Resembling the eye in form or function: ocular spots; an ocular organ.
2. Of or relating to the sense of sight: an ocular aberration.
3. Seen by the eye; visual: ocular proof.
The eyepiece of an optical instrument.
[Late Latin oculāris, from Latin oculus, eye; see okw- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.