Hypertext Webster Gateway: "orbital"

From Webster's Revised Unabridged Dictionary (1913) (web1913)

Orbital \Or"bit*al\, a.
Of or pertaining to an orbit. ``Orbital revolution.'' --J. D.
Forbes.

{Orbital index} (Anat.), in the skull, the ratio of the
vertical height to the transverse width of the orbit,
which is taken as the standard, equal to 100.

From WordNet (r) 1.7 (wn)

orbital
adj 1: of or relating to an orbit; "orbital revolution"; "orbital
velocity"
2: of or relating to the eye socket; "orbital scale"; "orbital
arch"

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