a. [ L. specularis (cf., from the same root, specula a lookout, watchtower): cf. F. spéculaire. See Speculum. ] 1. Having the qualities of a speculum, or mirror; having a smooth, reflecting surface; as, a specular metal; a specular surface. [ 1913 Webster ]

2. (Med.) Of or pertaining to a speculum; conducted with the aid of a speculum; as, a specular examination. [ 1913 Webster ]

3. Assisting sight, as a lens or the like. [ Obs. ] [ 1913 Webster ]

Thy specular orb
Apply to well-dissected kernels; lo!
In each observe the slender threads
Of first-beginning trees. J. Philips. [ 1913 Webster ]

4. Affording view. [ R. ] “Look once more, ere we leave this specular mount.” Milton. [ 1913 Webster ]

Specular iron. (Min.) See Hematite. [ 1913 Webster ]