Definitions

1. noun

A symbol in mathematics used to represent an anonymous function, especially in functional programming.

“The lambda function can simplify complex calculations.”

2. noun

A unit of measurement for wavelengths of light, equal to a billionth of a micrometer.

“The wavelength of the laser light was measured in lambdas.”

3. proper noun

A constellation in the southern sky, named after the 29th letter of the Greek alphabet.

“The lambda constellation is visible from the southern hemisphere.”

4. proper noun

A Greek letter, the 11th letter of the Greek alphabet.

“The lambda symbol is used in mathematics and science.”