口腔 kǒuqiāng oral cavity
怎么记住“口腔”: 口 mouth (Kangxi radical 30) + 腔 chest cavity = oral cavity.
汉字
用法
- The oral cavity as an anatomical/medical term - 口腔卫生 (kǒuqiāng wèishēng) oral hygiene, 口腔医院 dental hospital.
- Not the everyday word for 'mouth' (that's 嘴 or 嘴巴) - 口腔 belongs to health and dentistry contexts.