noun
concentrated juice
Refers to juice that has been reduced in volume by removing water, often sold as a concentrate to be diluted before drinking.
濃縮ジュースを水で薄めて飲む。
I dilute concentrated juice with water and drink it.
ストレートジュース is ready-to-drink juice that is not concentrated, while 濃縮ジュース must be diluted before drinking.
Compound of 濃縮 (のうしゅく, 'concentration') and ジュース ('juice'), a straightforward modern term.