1. biconvex - Adjective
2. biconvex - Adjective Satellite
Convex on both sides; as, a biconvex lens.
Source: Webster's dictionaryA lens is biconvex (or double convex, or just convex) if both surfaces are convex. Source: Internet
If the lens is biconvex or plano-convex, a collimated beam of light passing through the lens converges to a spot (a focus) behind the lens. Source: Internet
The remaining distal carpal, referred to here as the medial carpal, but which has also been termed the distal lateral, or pre-axial carpal, articulates on a vertically elongate biconvex facet on the anterior surface of the distal syncarpal. Source: Internet