Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Adjective: abstruse (abstruser,abstrusest)  ub'stroos
  1. Difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge
    "the professor's lectures were so abstruse that students tended to avoid them";
    - deep, recondite

Derived forms: abstrusest, abstruser

See also: esoteric

Encyclopedia: Abstruse