Sigmas

1 definition found

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

  Sigma \Sig"ma\, n.; pl. {Sigmas}. [L., from Gr. ???, ???.]
     The Greek letter [Sigma], [sigma], or [sigmat] (English S, or
     s). It originally had the form of the English C.
     [1913 Webster]