おう
凹
めん
面

noun

  1. concavity.

takes genitive case の

  1. concave.

Variations

Pronunciation Kanji Kana Is Common
おう
凹
めん
面
 凹面 おうめん

Contained Kanji Breakdown

concave, hollow, sunken
へこ.む　オウ　ぼこ (Early High School, N1)
open box enclosure, open box radical (no. 17)
カン (Kentei 1)
mask, face, features
メン　おも　つら (3rd, N3)
cliff, (厂 variant)
to turn around, to return, to go back
box, box or enclosure radical (no. 31)
イ　コク (Kentei 1)
eye, class, look
め　モク　ボク (1st, N4)