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).

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

(biochemistry) Any amino acid that has the amino and carboxylic functional groups attached to the same carbon atom; especially those amino acids that occur naturally as peptides and proteins.

plural of alpha privative

plural of alpha wave

plural of alpha geek

(physics) A form of radioactivity in which alpha particles are emitted from the nucleus of an atom

(grammar) The prefix a- (or an- when prefixing a root which begins with a vowel) found in some English words of Greek derivation. It expresses negation or absence. The prefix has cognates in other Indo-European languages, including in- in Latin and un- in English.

The 24-letter alphabet of the Greek language, first adopted by Athens in 403 BC and now consisting of the following upper- (majuscule) and lower-case (minuscule) pairs:

The sequence of a collection of items (such as words in a dictionary) arranged in order by position in the alphabet.