Jinmeiyō kanji, used in names
JLPT level: N1
Stroke count: 13
Meaning: deep and broad (water)
Kunyomi: ひろ.い
Onyomi: コウ
Composition: 氵 晃
Radical: 水
Meaning: water
滉瀁 （コウヨウ） wide and deep (of a body of water)