A part
質
Shown as a part of 3 words so far, read 2 ways.
しつ 2 words
- 質問しつもんquestion, inquiry
質問 · here “quality”
- 蛋白質たんぱくしつprotein
蛋白質 · here “material”
じち 1 word
- 人質ひとじちhostage
人質 · here “pawn, hock” (from しち)
Also written with 質
These words contain the character in their spelling but show no breakdown that names it, so nothing is claimed about its role in them.