specular

Pertaining to mirrors; mirror-like, reflective.

a perfect likeness would rather suggest a specular, and hence speculatory, phenomenon [...].

Of or relating to a speculum; conducted with the aid of a speculum.

a specular examination

Assisting sight, like a lens etc.

Thy specular orb / Apply to well-dissected kernels; lo! / In each observe the slender threads / Of first-beginning trees.

Offering an expansive view; picturesque.

Calm as the Universe, from specular towers / Of heaven contemplated by Spirits pure.

Look once more, e're we leave this specular mount.