1. biconvex

adjective. convex on both sides; shaped like a lentil.


  • convex
  • lenticular
  • bulging
  • convexo-convex


  • intrusive
  • pouchlike
  • saclike
  • pouch-shaped

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Example sentences of the word biconvex

1. Adjective
Magnifying glasses and microscopes work in the same basic way, using biconvex lenses (lenses with two convex sides) to produce a magnified version of the images.

2. Noun, singular or mass
Refractor telescopes work just like microscopes and magnifying glasses, with a biconvex lens producing a focal point inside the body of the telescope, but the light continuing on to reach the eyepiece.