myEtymology.com: English etymology of butyr-

Etymology of the English prefix butyr-

the English prefix butyr-

derived from the Latin word butyrum

derived from the Greek word bouturon, βούτυρον

derived from the Greek word bous, βοῦς (an ox (as grazing); an animal of that species ('beef'))

derived from the Proto-Indo-European root *gʷou-

using the Latin suffix -aceous