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py·ra·nose 'pī-rə-.nōs, -.nōz n a monosaccharide in the form of a cyclic hemiacetal containing a pyran ring
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pyr·a·nose (pirґə-nōs) any sugar containing a pyran ring structure, a cyclic form that ketoses and aldoses may take in solution. See also individual sugars, e.g., glucopyranose.Medical dictionary. 2011.