The Collaborative International Dictionary of English v.0.48:

Mateotechny \Ma`te*o*tech"ny\ (m[=a]`t[-e]*[-o]*t[e^]k"n[y^]),
   n. [Gr. mataiotechni`a; ma`taios vain + te`chnh art,
   science.]
   Any unprofitable science. [Obs.]
   [1913 Webster]