Definition of olein
1 : an ester of glycerol and oleic acid
2 : the liquid portion of a fat
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Origin and Etymology of olein
French oléine, from Latin oleum
First Known Use: 1838
Medical Dictionary
olein
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noun
ole·in
\ˈō-lē-ən\
Medical Definition of olein
: an ester of glycerol and oleic acid—called also triolein
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