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1. The act or process of modifying or the condition of being modified.
2. A change or a result produced by modifying: new modifications in the car's design.
a. A change undergone by a word that is borrowed from another language.
b. A phonological change undergone by a word or morpheme when it is used in a construction, as the change of will to 'll in they'll.
mod′i·fi·ca′to·ry (-kā′tə-rē), mod′i·fi·ca′tive (-kā′tĭv) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.