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dif·fer·en·tial (dĭfə-rĕnshəl)
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adj.
1. Of, relating to, or showing a difference.
2. Constituting or making a difference; distinctive.
3. Dependent on or making use of a specific difference or distinction.
4. Mathematics Of or relating to differentiation.
5. Involving differences in speed or direction of motion.
n.
1. Mathematics
a. An infinitesimal increment in a variable.
b. The product of the derivative of a function of one variable and the increment of the independent variable.
2. A differential gear.
3. A difference between comparable things, as in wage rate or in price.

differ·ential·ly adv.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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:

    Indo-European Roots

    Semitic Roots

    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.