プラーク
プ
ラ
ー
ク
Meanings
1
dental plaque
Specifically the sticky film of bacteria on teeth. The cross-reference 歯垢 is the native Japanese equivalent.
See also: 歯垢
The dentist recommended removing plaque.
2
atheromatous plaque
Medical term for fatty deposits inside arteries. Used in contexts like 動脈プラーク (arterial plaque).
Arterial plaque can narrow blood vessels.