凸凸 tū tū

biconvex; convex on both sides (of lens)

Word data

HSK Not in HSK
Frequency Unknown

Definitions

  1. 1. biconvex
  2. 2. convex on both sides (of lens)

Characters

Character Meaning
凸 tū HSK 6
to stick out; protruding; convex
凸 tū HSK 6
to stick out; protruding; convex