An initialism: an abbreviation which is read letter by letter, such as UN. / The ability to read an alphabet, a rudimentary form of literacy.

The set of letters used when writing in a language.

(rare) To designate by the letters of the alphabet; to arrange alphabetically.

Pertaining to, furnished with, or expressed by letters of the alphabet. / According to the sequence of the letters of the alphabet. / (obsolete) literal

Of or relating to an alphabet, especially the characters A to Z, both uppercase and lowercase.

plural of alphabetism

(US, Canada) To arrange words or items in order of the first (and then subsequent) letters as they occur in the alphabet.

(manner) In an alphabetical manner. / (sequence) Arranged in the order of the alphabet.

(Canada, US) Arranged in alphabetical order. / Alternative spelling of alphabetised

(Canada, US) simple past tense and past participle of alphabetize / Alternative spelling of alphabetised