\Spec"u*lar\, a. [L. specularis (cf., from the same
root, specula a lookout, watchtower): cf. F. sp['e]culaire.
See {Speculum}.]
1. Having the qualities of a speculum, or mirror; having a
   smooth, reflecting surface; as, a specular metal; a
   specular surface.
2. (Med.) Of or pertaining to a speculum; conducted with the
   aid of a speculum; as, a specular examination.
3. Assisting sight, as a lens or the like. [Obs.]
         Thy specular orb Apply to well-dissected kernels;
         lo! In each observe the slender threads Of
         first-beginning trees.                --J. Philips.
4. Affording view. [R.] ``Look once more, ere we leave this
   specular mount.'' --Milton.
{Specular iron}. (Min.) See {Hematite}.