λ

Symbol

 * 1)  wavelength
 * 2)  Half-life
 * 3)  Lebesgue measure
 * 4)  Lambda abstraction
 * 5)  a voiced alveolar lateral affricate (IPA []).

Usage notes
As an orthographic letter of a Latin alphabet, Unicode has assigned a distinct character, $⟨ꟛ⟩$. See.

Etymology
Derived from its majuscule counterpart Λ.

Letter

 * 1) Lower-case lambda, the 11th letter of the ancient Greek alphabet. It represented the alveolar lateral approximant . It is preceded by κ and followed by μ.

Derived terms
See also lambda

Letter

 * 1) The lower case letter lambda (λάμδα), the eleventh letter of the modern Greek alphabet.

Numeral

 * 1) The number thirty in Greek numerals.

Numeral

 * 1) The number 30,000 in Greek numerals.