Wordnet 3.0
ADJECTIVE (1)
1. 
 having already been put into a suitable condition; 
- Example: "a surface preconditioned to receive paint"- Example: "customers preconditioned to buy a product"
WordNet (r) 3.0 (2006):
preconditioned
    adj 1: having already been put into a suitable condition; "a
           surface preconditioned to receive paint"; "customers
           preconditioned to buy a product"