[1] : The Collaborative International Dictionary of English v.0.48

lambda \lamb"da\, n. nl., fr. gr. la`mbda.
   1. the name of the greek letter lambda, lambda,
      corresponding with the english letter l, l.
      1913 webster

   2. anat. the point of junction of the sagittal and lambdoid
      sutures of the skull.
      1913 webster

   3. phys. a subatomic particle carrying no charge, having a
      mass equal to 2183 times that of an electron; it decays
      rapidly, typically forming a nucleon and a pion. --mw10
      pjc

   lambda moth zool., a moth so called from a mark on its
      wings, resembling the greek letter lambda lambda.
      1913 webster
see also:
lambda moth 

Moth >> M Words
Moth, definition of term: Moth
moth_pag1.html

Lambda >> L Words
Lambda, definition of term: Lambda
lambda_pag1.html

Imperial Moth >> I Words
Imperial Moth, definition of term: Imperial Moth
imperial+moth_pag1.html

Gypsy Moth >> G Words
Gypsy Moth, definition of term: Gypsy Moth
gypsy+moth_pag1.html

Geometrid Moth >> G Words
Geometrid Moth, definition of term: Geometrid Moth
geometrid+moth_pag1.html