in·hi·bi·tion (ĭn′hə-bĭshən, ĭn′ə-)
1. The act of inhibiting or the state of being inhibited.
2. Something that restrains, blocks, or suppresses.
3. Psychology Conscious or unconscious restraint of a behavioral process, desire, or impulse.
a. Chemistry The condition in which or the process by which a reaction is inhibited.
b. Biology The condition in which or the process by which an enzyme, for example, is inhibited.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.