hy·drol | \ ˈhīˌdrȯl , -rōl \
plural -s

Definition of hydrol 

1a : the simple water molecule H2O

b : a polymer (H2O)n of this molecule

2 : a secondary alcohol (as benzhydrol) especially of the aromatic series

3 or less commonly hydrol syrup [ probably irregular from hydr- ] : a light brown syrupy mother liquor from the manufacture of dextrose used in the fermentation industries

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History and Etymology for hydrol

hydr- + -ol

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occurring twice a year or every two years

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