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compact disk

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noun

an optical disk approximately 4.75 inches (12 centimeters) 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

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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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Scientific definitions for compact disk

compact disk
compact disc (kŏmpăkt′)

A small optical disk on which data such as music, text, or graphic images is digitally encoded.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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