The phrase refers to an orbiting body (a planet or protoplanet) "sweeping out" its orbital region over time, by gravitationally interacting with smaller bodies nearby.

They defined Λ (lambda), a measure of a body's ability to scatter smaller masses out of its orbital region over a long period of time.

The skull was armoured with bony dermal plates, which were especially plentiful in the orbital region.

One of these circuits, involving the orbital frontal cortical thalamic regions of the brain, is supposed to screen incoming sensations and thoughts and determine which are important.

The brain regions involved in behavioral inhibition appear to be the lateral and orbital prefrontal regions along with premotor processes.

The circuit begins in the orbital region of the frontal cortex, just above each eye.

Nerve fibers in the orbital region carry such impulses to the caudate nuclei lower in the brain for possible action.

This means that unless its discovery was a freak accident, there is probably a substantial population of objects roughly Sedna's diameter yet to be observed in its orbital region.

The skull of Trirachodon had a short, narrow snout with a wide orbital region.

In Guenon monkeys, the pole area is filled by BA 12 (and its BA 10 is found in the orbital prefrontal region).