noun

  1. concave lens.

Variations

Pronunciation Kanji Kana Is Common
 
 
 
凹レンズ おうレンズ

Contained Kanji Breakdown

concave, hollow, sunken
へこ.む オウ ぼこ (9th, N1)
open box enclosure, open box radical (no. 17)
カン (Kentei 1)