1. The act of competing, as for profit or a prize; rivalry.
2. A test of skill or ability; a contest: a skating competition.
3. Rivalry between two or more businesses striving for the same customer or market.
4. A competitor: The competition has cornered the market.
5. Ecology The simultaneous demand by two or more organisms for a limited environmental resource, such as nutrients, living space, or light.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.