From sub- + orbit.
suborbit (plural suborbits)
- The lower part of the orbit of the eye
2016 January 21, “Implicit Processing of the Eyes and Mouth: Evidence from Human Electrophysiology”, in PLOS ONE[1], →DOI:Electrode pairs (bipolar) were placed at the supra- and suborbit of the right eye and at the external canthi of the eyes.