Learn how to say Esterified correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word ester:
an organic compound made by replacing the hydrogen of an acid by an alkyl or other organic group. Many naturally occurring fats and essential oils are esters of fatty acids.
verb (esterifies, esterifying, esterified)
mid 19th century: from German, probably from a blend of Essig ‘vinegar’ and Äther ‘ether’