a. The act or process of replicating something.
b. Biology The process by which genetic material, a single-celled organism, or a virus reproduces or makes a copy of itself.
c. In scientific research, the repetition of an experiment to confirm findings or to ensure accuracy.
d. A copy or reproduction: a replication of a famous painting.
2. Law The plaintiff's response to the defendant's answer or plea; a reply.
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.