| NOUN | body | frontal sinus | one of a pair of cavities in the frontal bone |
|---|
| Meaning | One of a pair of cavities in the frontal bone. | |
|---|---|---|
| Broader | sinus | Any of various air-filled cavities especially in the bones of the skull |
| Spanish | seno frontal | |
| Catalan | si frontal | |
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