cavity

Definitions

cav (hollow) + -ity (state/thing) = 'a hollow thing.' A cavity is simply an empty space inside something solid. When decay eats a hollow into a tooth, that hole is literally a cavity — the same word the body uses for the chest cavity or nasal cavity.

Common Collocations

• 1.tooth cavity蛀牙
• 2.fill a cavity补牙
• 3.chest cavity胸腔
• 4.nasal cavity鼻腔
• 5.body cavity体腔

Example Sentences

• 1.

  The dentist found a small cavity in one of my back teeth.

• 2.

  The lungs sit inside the chest cavity, protected by the ribs.

• 3.

  Water had carved a deep cavity into the limestone over centuries.