\Lamb"da\, n. [NL., fr. Gr. ?.] 1. The name of the Greek letter [Lambda], [lambda], corresponding with the English letter L, l. 2. (Anat.) The point of junction of the sagittal and lambdoid sutures of the skull. {Lambda moth} (Zo["o]l.), a moth so called from a mark on its wings, resembling the Greek letter lambda ([Lambda]).
A version of typed lambda-calculus, used to describe semantic domains.
["Outline of a Mathematical Theory of Computation", D.S. Scott, TM PRG-2, PRG, Oxford U, 1971].