- the first letter of the Greek alphabet (A, α).
- the vowel sound represented by the first letter of the Greek alphabet.
- the first; the beginning.
- used to designate the brightest star in a constellation: Alpha Arietis is the brightest star in Aries.
- one of two or more isomeric compounds.
- the first in a series of related items: frequently used in chemistry and physics.
- an early phase of hardware or software development, in which an alpha test occurs: Some modules are complete and ready for consumers while others are still in alpha.
- a mark or grade corresponding to an A.
- alpha male.
- (of an animal) having the highest rank in a dominance hierarchy: the alpha female of an elephant pack.
- being the most dominant, powerful, or assertive person in a particular group.
- being or relating to a man who is perceived to be assertive, successful, and sexually dominant.
- alphabetical: Put the files in alpha order.
- being, relating to, or undergoing the phase of product development in which an alpha test occurs: This initial release is really an alpha version only available to developers.
- relating to or linked to the carbon atom closest to a particular group in an organic molecule.
- the first letter in the Greek alphabet (Α, α), a vowel transliterated as a
- the highest grade or mark, as in an examination
- (modifier)
- involving or relating to helium-4 nuclei
- relating to one of two or more allotropes or crystal structures of a solid
- relating to one of two or more isomeric forms of a chemical compound, esp one in which a group is attached to the carbon atom to which the principal group is attached
- denoting the dominant person or animal in a group
- usually the brightest star in a constellation
- a code word for the letter a
