ˈroot caˌnal BrE AmE noun [countable]
the space inside the root of a tooth:
root canal treatment (=treatment in which a ↑ dentist removes a diseased area in the root of a tooth)
ˈroot caˌnal BrE AmE noun [countable]
the space inside the root of a tooth:
root canal treatment (=treatment in which a ↑ dentist removes a diseased area in the root of a tooth)
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012