The Collaborative International Dictionary of English v.0.48:

Mateology \Ma`te*ol"o*gy\ (m[=a]`t[-e]*[o^]l"[-o]*j[y^]), n.
   [Gr. mataiologi`a; ma`taios useless, vain + lo`gos discourse:
   cf. F. mat['e]ologie.]
   A vain, unprofitable discourse or inquiry. [R.]
   [1913 Webster]