Alphabetarian :: Alphabetarian (n.) A learner of the alphabet; an abecedarian.
Betaine :: Betaine (n.) A nitrogenous base, C5H11NO2, produced artificially, and also occurring naturally in beet-root molasses and its residues, from which it is extracted as a white crystalline substance; -- called also lycine and oxyneurine. It has a sweetish taste..