tr.v. rec·ti·fied, rec·ti·fy·ing, rec·ti·fies
a. To set right; correct: rectified the situation by adding more chairs so that more people could sit. See Synonyms at correct.
b. To correct by calculation or adjustment: rectified the mathematical error.
2. Chemistry To refine or purify, especially by distillation.
3. Electronics To convert (alternating current) into direct current.
4. To adjust (the proof of alcoholic beverages) by adding water or other liquids.
[Middle English rectifien, from Old French rectifier, from Medieval Latin rēctificāre : Latin rēctus, right; see reg- in the Appendix of Indo-European roots + Latin -ficāre, -fy.]
rec′ti·fi·cation (-fĭ-kāshən) 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.