catheterize Syllabification: (cath·e·ter·ize)Pronunciation: /ˈkaTHətəˌrīz/Definition of catheterize verb [with object] Medicine insert a catheter into (a patient or body cavity). Derivatives catheterizationPronunciation: /ˌkaTHətərəˈzāSHən/ noun catheterize in other Oxford dictionaries Definition of catheterize in the British & World English dictionary