obturate
/ˈɒbtjʊreɪt/
verb
- To close or block an opening, passage, or cavity; to stop up.
- The dentist needed to obturate the root canal after cleaning it.
- The plumber used a special compound to obturate the leak in the pipe.
- In surgery, a sponge may be used to obturate a wound and control bleeding.
Antonyms