rectification

1 of 2

noun

rec·​ti·​fi·​ca·​tion ˌrek-tə-fə-ˈkā-shən How to pronounce rectification (audio)
1
: the conversion of alternating to direct current
2
: a process by which distilled spirits are blended together or substantially changed by the addition usually of spirits, flavoring, or coloring material

rectify

2 of 2

transitive verb

rec·​ti·​fy ˈrek-tə-ˌfī How to pronounce rectify (audio)
rectified; rectifying
1
: to purify (as alcohol) especially by repeated or fractional distillation
2
: to make (an alternating current) unidirectional

Did you know?

When you rectify something, you correct an error or make things right, which is fitting because rectify and correct both ultimately trace back to the Latin word regere, meaning “to lead straight,” “to direct,” or “to rule.” Rectify has had its “to set right” meaning since the early 16th century, but the word has over the years accrued various other meanings as well, including the specialized uses “to purify especially by repeated or fractional distillation” (as in “rectified alcohol”), “to make (an alternating current) unidirectional,” and several medical applications having to do with healing of one kind or another. Regere plays a part in the histories of several familiar English words, in addition to those mentioned above; the many relatives of rectify include direct, resurrection, and regimen.

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Cite this Entry

“Rectification.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rectification. Accessed 30 Jun. 2026.

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