Wordnet 3.0
VERB (1)
1. 
 insert a catheter into (a body part); 
- Example: "catheterize the patient's bladder"[syn: catheterize, catheterise]
The Collaborative International Dictionary of English v.0.48:
Catheterize \Cath"e*ter*ize\, v. t. [imp. & p. p.
   Catheterized; p. pr. & vb. n. Catheterizing.] (Med.)
   To operate on with a catheter. --Dunglison.
   [1913 Webster]
WordNet (r) 3.0 (2006):
catheterize
    v 1: insert a catheter into (a body part); "catheterize the
         patient's bladder" [syn: catheterize, catheterise]