凹角

Reading

Kana: おうかく

Romaji: oukaku

Definition

noun

1

concave angle; (a) re-entrant

(Mathematics)

Kanji

凹

Readings: オウ、 くぼ.む、 へこ.む、 ぼこ

Meanings: concave, hollow, sunken

角

Readings: カク、 かど、 つの

Meanings: angle, corner, square, horn, antlers