Skip to content

凸凸

tū tū

Definitions

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

Stop forgetting what you study. Build recall daily.

Try HanyuGuide's Chinese review system with multiple choice, typed recall, tone-aware practice, and reviews scheduled before memory fades.

Start Free Trial · $49.99 / year

Continue with Email
Try a practice session

Child Words of 凸凸