The definition of alpha is the first letter in the Greek alphabet.(noun)
An example of alpha can be seen in many Greek fraternity or sorority names such as Alpha Sigma Lambda.
Alpha is defined as the beginning of something.(noun)
An example of alpha as the beginning of something is when it is used in the scripture Revelations 22:13 to refer to God.
Alpha is the highest level in a group, or the best.(adjective)
An example of alpha is when it is used to describe a dog who is the leader of the pack.
See alpha in Webster's New World College Dictionary
Origin: Gr < NW Sem: cf. Heb alef, aleph
See alpha in American Heritage Dictionary 4
Origin: , of Phoenician origin; see אlp in Semitic roots.
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