n. pl. in·e·qual·i·ties
a. The condition of being unequal.
b. An instance of being unequal.
a. Lack of equality, as of opportunity, treatment, or status.
b. Social or economic disparity: the growing inequality between rich and poor.
3. Lack of smoothness or regularity; unevenness.
4. Variability; changeability.
5. Mathematics An algebraic relation showing that a quantity is greater than or less than another quantity.
6. Astronomy A deviation from uniformity in the apparent motion of a celestial body.
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.