baseline(redirected from orbitomeatal line)
Also found in: Dictionary, Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.
Related to orbitomeatal line: orbitomeatal plane, intraorbital
East-west lines in the public land survey system, part of the baseline and meridian line components. Each principal meridian has a baseline. Properties in the principal meridian's area are described by their bearing east or west of the meridian and north or south of the baseline.