lambda(redirected from Lambda (unit))
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1. The 11th letter of the Greek alphabet, used in stellar nomenclature usually to designate the 11th-brightest star in a constellation or sometimes to indicate a star's position in a group.
2. Symbol for wavelength or longitude.
A unit of volume equal to 10-6 liter or 10-9 cubic meter.
Greek letter adopted as symbol by gay liberation movement. [Am. Pop. Cult.: Misc.]
lambdaThe Greek letter "L," which is used as a symbol for "wavelength." A lambda is a particular frequency of light, and the term is widely used in optical networking. Sending "multiple lambdas" down a fiber is the same as sending "multiple frequencies" or "multiple colors." See WDM and wavelength.
|The symbol above the word "wavelength" in this diagram is the Greek Lambda.|