ester has definitions from the field of chemistry
1
[ noun ] (chemistry) formed by reaction between an acid and an alcohol with elimination of water

Used in print

(Jay C. Harris and John R. Van Wazer, "Detergent...)

Greasy soils , which are typified by hydrocarbons and fats ( esters of glycerol with long chain organic acids ) .

2
[ noun ] Last name, frequency rank in the U.S. is 12056
3
[ noun ] Woman's first name, popularity rank in the U.S. is 620
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