Pronunciation: [sˌiːdˈiː] (IPA) 
The spelling of the word "CD" is relatively straightforward. The first letter, "C" is pronounced /siː/ and the second letter "D" is pronounced /diː/. Together, they create the sound of "see-dee." "CD" stands for "compact disc" and is a type of optical disc commonly used for storing and playing digital audio, video, and data. Despite the rise of digital streaming, CDs remain a popular format for music enthusiasts and collectors.
CD is an abbreviation for Compact Disc. It refers to a small, circular, flat, and portable optical storage medium primarily used for storing digital data. A CD is made up of a thin, reflective metal layer, commonly aluminum, sandwiched between two layers of polycarbonate plastic. The metal layer is etched with microscopic pits that represent the data encoded on the CD.
CDs are commonly used for audio recordings such as music albums but can also store various other forms of data, such as software programs, images, and videos. They have a capacity of typically 700-800 megabytes, which can hold approximately 80 minutes of audio.
CDs are read by optical disc drives that emit a laser beam, which scans the surface of the disc. When the laser hits the pits, it reflects differently, allowing the drive to gather the encoded information. CDs are played using CD players or CD-ROM drives on computers.
The term CD can also be used as a verb, meaning to transfer files or data onto a CD for storage or distribution. This process is commonly known as burning a CD. CD burning involves creating an image of the content in digital format and then writing it onto the CD using a CD burner.
In summary, a CD is a compact disc used for storing and playing back digital data, including audio, software, images, and videos. It offers a portable and convenient medium for storage and entertainment purposes.
Symbol of the element cadmium.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
