na-adjective, noun which may take the genitive case particle 'no'
Used in geometry, mathematics, and technical contexts to describe a surface or shape that curves outward. Often appears in compounds like 凸レンズ (convex lens) or 凸面 (convex surface).
このレンズは凸レンズです。
This lens is a convex lens.
凸面鏡は光を広げる。
A convex mirror spreads light.
unevenness; bumpiness; roughness · imbalance; unevenness; disparity
convex lens
biconvex
charge; rush; assault · flood with complaint calls · message; contact
convexity
The kanji 凸 is a pictographic character representing a protruding shape. The reading とつ is the on'yomi, used in technical and compound words.