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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.
3. Linguistics
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′tor n.
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.
References in periodicals archive ?
As shown in Table 2, different concentrations of additives (the PEG 10000 and 1,4-butynediol) were considered to be added to the electrolyte and this modificatory PN film was obtained with high specific surface area and porosity.
Molecular sieves coated with silver particles were prepared using a modificatory method described by Saito and coworkers [32].
Even in the context of a conflict with a basic procedural right related to trial fairness, Chief Justice McLachlin's majority judgment explicitly indicates that reconciliation of competing rights claims through mutually modificatory interpretation of those rights is the preferred option for analysis of conflicting rights, with "balancing" of rights then only a last-resort option.
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