Perissad

1 definition found

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

  Perissad \Per"is*sad\, a. [Gr. ? odd, from ? over.] (Chem.)
     Odd; not even; -- said of elementary substances and of
     radicals whose valence is not divisible by two without a
     remainder. Contrasted with {artiad}. [Archaic]
     [1913 Webster]