GNU Collaborative International Dictionary of English

Found 2 definitions 

  1.       

    catatonic adj.
    1. of or pertaining to catatonia; suffering from catatonia.
      WordNet 1.5
    2. appearing mentally stupefied, unresponsive, and motionless, or almost so; seemingly unaware of one's environment. [Colloq.]
      PJC
    
      
    
  2.       

    catatonic n. a person suffering from catatonia.
    PJC