symbols, acronyms & abbreviations

cd

1

candela. Used without a period. A symbol in SI, the International System of Units.

Barry N. Taylor, ed.
The International System of Units (SI)
NIST Special Publication 330, 2001 Edition.

The United States version of the English text of the seventh edition (1998) of the International Bureau of Weights and Measures publication Le Système International d’Unités (SI), including Supplément 2000: additions et corrections à la 7e édition (1998) See Section 2.2.2 and table 3, page 11.

2

candle

IEEE Std 260.1™-1004. IEEE Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units). Approved 22 July 2004, American National Standard Institute; approved 25 March 2004, IEEE-SA Standards Board. New York: IEEE, 24 September 2004.