IPA: //bɪˈtɑːrtreɪt//
KK: /bɪˈtɑːrtreɪt/
A chemical compound that is a salt or ester of tartaric acid, often used in food and pharmaceuticals.
Bitartrate is commonly found in cream of tartar, which is used in baking.
Bitartrate is formed from "bi-" (meaning two) and "tartrate" (from Latin "tartratum", meaning a salt or ester of tartaric acid). The word refers to a compound that contains two tartrate ions.
Think of 'two' ('bi-') tartrate ions coming together to form a compound — that's what bitartrate means.