Argillitic

1 definition found

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

  Argillite \Ar"gil*lite\, n. [Gr. ? clay + -lite.] (Min.)
     Argillaceous schist or slate; clay slate. Its colors is
     bluish or blackish gray, sometimes greenish gray, brownish
     red, etc. -- {Ar`gil*lit"ic}, a.
     [1913 Webster]