pyran

noun

py·ran ˈpī-ˌran

: either of two cyclic compounds C₅H₆O that contain five carbon atoms and one oxygen atom in the ring

Word History

Etymology

International Scientific Vocabulary

First Known Use

1904, in the meaning defined above

Time Traveler

The first known use of pyran was in 1904

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Pyramus

pyran

pyranoid

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Cite this Entry

Style

“Pyran.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyran. Accessed 1 Apr. 2026.

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Medical Definition

pyran

noun

py·ran ˈpī(ə)r-ˌan

: either of two cyclic compounds C₅H₆O that contain five carbon atoms and one oxygen atom in the ring

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