(bound form) male; specifically the sex of animals or plants that produces sperm or pollen

A type of organic compound formed by the reaction of an alcohol and an acid with the loss of water. Low molecular weight esters are typically fragrant liquids used as solvents or flavorings, while high molecular weight esters are solids or thick liquids found in fats and oils.

(bound form) ketone; an organic compound containing a carbonyl group connected to two hydrocarbon groups