ALL meanings of antrum
an·trum
A a - noun antrum a natural cavity, hollow, or sinus, esp in a bone 3
- noun antrum a cavity, esp. one within a bone, as either of a pair of sinuses in the upper jaw 3
- noun antrum A natural chamber or cavity in a bone or other anatomical structure. 1
- noun plural antrum a cavity in a body organ, especially a bone. 1
- noun antrum (biology) A bodily cavity, especially one having bony walls, especially one in the sinuses. 0