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Definition of lambda

lambda

/ˈlæm.də/
lamb · da
Plural:lambdas
•
Adjective:lambdoid
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lambda Lexical Profile

lambda Game Scores & Validity

• noun

1

The eleventh letter of the Greek alphabet (Λ, λ), transliterated as 'l'.

Example

"Ancient Spartan warriors famously painted a crimson lambda on their shields to stand for Lacedaemon."

2

A symbol (λ) used in physics and mathematics to denote wavelength, eigenvalue, decay constant, or an anonymous function in computer science.

Example

"In the wave equation, lambda represents the distance between two successive crests."

3

The craniometric point at the back of the human skull where the sagittal and lambdoid sutures meet.

Example

"The forensic anthropologist measured the cranial vault from the bregma to the lambda."

• Nearby Words

lamb
lamb's lettuce
lambaste
lambda
lambie
lambing
lamblike

Word Origin & Etymology

Borrowed from Latin lambda, from Ancient Greek λάμβδα (lámbda), ultimately derived from the Phoenician letter lamed (𐤋), meaning 'goad' or 'cattle prod'.

Cite this Entry

Wordmom. (2026). Definition of Lambda. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lambda
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