D defs.my
Entry 1 sense Webster, 1913

Wollaston's doublet

· Wol·las·ton's dou·blet · IPA
01 A magnifying glass consisting of two plano-convex lenses. It is designed to correct spherical aberration and chromatic dispersion.
  1. 1.
    A magnifying glass consisting of two plano-convex lenses. It is designed to correct spherical aberration and chromatic dispersion.(Optics)