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

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

The set of letters used when writing in a language.

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

A standardized set of symbols for representing the sounds of human speech.

(nonstandard) the Devanagari writing system

The name of the first letter of the Greek alphabet (Α, α), followed by beta. In the Latin alphabet it is the predecessor to A. / Latin alpha: the Latin letter Ɑ (minuscule: ɑ).

Designates the first in an order of precedence. / (of person, object or action) Exhibiting characteristics of the alpha male/female archetype.

(linguistics) The Glagolitic writing system, the oldest known Slavonic alphabet.

A secondary structure found in many proteins, in which the amino acids are arranged in a coil, or helix, with almost no free space on the inside and all side chains being pointed towards the outside