n. (used with a sing. verb)
Cultivation of plants in nutrient solution rather than in soil.
hy′dro·poni·cist (-ĭ-sĭst), hy′dro·ponist (hī′drə-pŏnĭst, hī-drŏpə-hĭst) n.
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.