Definition of pyran in English:

pyran

(also pyrane)

noun ˈpʌɪran

Chemistry

Each of two unsaturated, heterocyclic compounds having the formula C₅H₆O, whose molecules have a six-membered ring consisting of five carbon atoms and one oxygen atom with two double bonds between carbon atoms; specifically γ-pyran. Also: a substituted derivative of such a compound; any compound containing a pyran ring.

Early 20th century; earliest use found in Journal of the Chemical Society. From pyr- + -an.

(also pyrane)

nounˈpʌɪran

Chemistry

Each of two unsaturated, heterocyclic compounds having the formula C₅H₆O, whose molecules have a six-membered ring consisting of five carbon atoms and one oxygen atom with two double bonds between carbon atoms; specifically γ-pyran. Also: a substituted derivative of such a compound; any compound containing a pyran ring.

Early 20th century; earliest use found in Journal of the Chemical Society. From pyr- + -an.

单词	pyran
释义	Definition of pyran in English: pyran (also pyrane) noun ˈpʌɪran Chemistry Each of two unsaturated, heterocyclic compounds having the formula C₅H₆O, whose molecules have a six-membered ring consisting of five carbon atoms and one oxygen atom with two double bonds between carbon atoms; specifically γ-pyran. Also: a substituted derivative of such a compound; any compound containing a pyran ring. Origin Early 20th century; earliest use found in Journal of the Chemical Society. From pyr- + -an. Definition of pyran in US English: pyran (also pyrane) nounˈpʌɪran Chemistry Each of two unsaturated, heterocyclic compounds having the formula C₅H₆O, whose molecules have a six-membered ring consisting of five carbon atoms and one oxygen atom with two double bonds between carbon atoms; specifically γ-pyran. Also: a substituted derivative of such a compound; any compound containing a pyran ring. Origin Early 20th century; earliest use found in Journal of the Chemical Society. From pyr- + -an.
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