礎

Cornerstone

Also: Foundation Stone

On'yomi

  • そ so

Kun'yomi

  • いしずえ ishizue
Stroke count
18
Radical
石 stone · Kangxi radical 112
JLPT level
N1
School grade
Secondary school

礎 has 18 strokes and its Kangxi radical is 石 (stone), number 112. Hashidari places it at JLPT N1. Japanese students learn it in junior high and high school.

No official JLPT kanji list exists: the level is Hashidari's own placement. How we place kanji

JLPT N1 kanji list · Secondary school kanji list (jōyō kanji after grade 6) · All kanji