alphabet
al·pha·bet (ălʹfə-bĕt', -bĭt)n. 1. The letters of a language, arranged in the order fixed by custom. 2. A system of characters or symbols representing sounds or things. 3. A set of basic parts or elements: “genetic markers... that contain repeated sequences of the DNA alphabet” (Sandra Blakeslee). [Middle English alphabete, from Latin alphabētum, from Greek alphabētos: alpha, alpha; see alpha + bēta, beta; see beta.]
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