Someone who practices alphabetism, discrimination on the basis of the first letter of a name.

plural of alphabetist

Obsolete form of alphabetic.

(rare) One who deals with the alphabet in some way, for example by attempting to make a series of utterances beginning with each letter of the alphabet in order.

plural of alphabetician

(obsolete) alphabetic; rudimentary

Resembling an alphabet.

(organic chemistry) Pertaining to the alpha, beta, and gamma positions on an organic molecule.