n. pl. hy·per·tro·phies
A nontumorous enlargement of an organ or a tissue as a result of an increase in the size rather than the number of constituent cells: muscle hypertrophy.
intr. & tr.v. hy·per·tro·phied, hy·per·tro·phy·ing, hy·per·tro·phies
To grow or cause to grow abnormally large.
hy′per·trophic (-trōfĭk, -trŏfĭk) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.