Density
Concentration
noun
When something is dense to a certain degree, you’re talking about the density or concentration of something.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
この、マンモグラフィ濃度って何ですか？
What is this mammographic density?
これは濃度20%の食塩水です。
This is a saline solution with a concentration of 20%.
市販のタイカレーペーストは、高濃度の塩分を含んでいるのであまり好きじゃありません。
Store-bought Thai curry paste contains high concentrations of salt, so I don't like it.
あなたの血中アルコール濃度については追って連絡致します。
I’ll get back to you on your blood-alcohol concentration.