Be"ta*ine (?), n. [From beta, generic name of the beet.] Chem.
A nitrogenous base, C5H11NO2, produced artificially, and also occurring naturally in beetroot molasses and its residues, from which it is extracted as a white crystalline substance; -- called also lycine and oxyneurine. It has a sweetish taste.
<-- not the amino acid lysine -->
© Webster 1913.