noun
oral region; regio oralis
Anatomical term for the area around the mouth. Used in medical contexts.
口部の清潔を保つことは重要です。
It is important to keep the oral region clean.
noun
kanji radical for 'mouth'
Refers to the kanji radical 口 (くちへん). Used when discussing kanji structure.
「口部」は漢字の部首の一つです。
'口部' is one of the kanji radicals.