(organic chemistry) reaction with butadiene

(organic chemistry, especially in combination) Any substituent derived from butadiene

(organic chemistry) The allenyl carboxylic acid CH₂=C=CH-COOH

plural of butadienoate

(organic chemistry) Any salt or ester of butadienoic acid

clarified butter

A surname originating as an occupation for a butcher.

(US slang, dated) A prosperous dairy farmer (or other wealthy rural citizen), seen as coming into the big city and ostentatiously living it up.

plural of button accordion

An accordion with a keyboard in the form of series of buttons.