also: こうくう
noun
oral cavity; mouth
Anatomical term for the mouth, including the lips, tongue, and interior. Used in medical and formal contexts; in everyday speech, 口 (くち) is more common.
口腔内を清潔に保つことは虫歯予防に重要です。
Keeping the oral cavity clean is important for preventing cavities.
口腔外科で親知らずを抜いてもらった。
I had my wisdom tooth extracted at the oral surgery department.
口 is the common word for 'mouth' in everyday language, while 口腔 is a formal anatomical term.
Compound of 口 (mouth) and 腔 (cavity), a straightforward kanji compound meaning 'oral cavity'.