an optical disk approximately 4.75 inches (12 cm) in diameter, on which a program, data, music, etc., is digitally encoded for a laser beam to scan, decode, and transmit to a playback system, computer monitor, or television set. Abbreviation: CD
Compare optical disk(def 1).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for compact disk
compact disc (kŏm′păkt′)
A small optical disk on which data such as music, text, or graphic images is digitally encoded.
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