planoconcave

Describes a lens or mirror that is flat on one side and concave on the other.

• 🇨🇳指一面平坦、另一面凹入的透镜或镜面。

1. Flat on one side and concave on the other C2 formal scientific

   Describes a lens or mirror that has one flat surface and one surface that curves inward like a cave.

   • The optician used a planoconcave lens to correct the patient's vision.
   • In the physics lab, we studied how light refracts through a planoconcave lens.
   • The telescope's design incorporated a planoconcave mirror to focus the light.

   🇨🇳平凹

• more planoconcave comparative form
• most planoconcave superlative form