pyridoxal

noun

pyr·i·dox·al ˌpir-ə-ˈdäk-ˌsal

: a crystalline aldehyde C₈H₉NO₃ of the vitamin B₆ group that occurs as a phosphate and is active as a coenzyme

Word History

Etymology

International Scientific Vocabulary, from pyridoxine

First Known Use

1944, in the meaning defined above

Time Traveler

The first known use of pyridoxal was in 1944

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Cite this Entry

Style

“Pyridoxal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyridoxal. Accessed 31 Jul. 2025.

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Medical Definition

pyridoxal

noun

pyr·i·dox·al ˌpir-ə-ˈdäk-ˌsal

: a crystalline aldehyde C₈H₉NO₃ of the vitamin B₆ group that in the form of its phosphate is active as a coenzyme

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