tr.v. cas·trat·ed, cas·trat·ing, cas·trates
1. To remove the testicles of (a male); geld or emasculate.
2. To remove the ovaries of (a female); spay.
3. To deprive of virility or spirit; emasculate.
An individual who is incapable of reproduction as a result of removal, destruction, or inactivation of the gonads.
[Latin castrāre, castrāt-; see kes- in the Appendix of Indo-European roots.]
castrat·er, castra·tor n.
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.