Relating to, or situated on, one side.
“Bilateral” means “on both sides”.
Referring to the sides of an organ or of the body, or that part furthest from the mid line or median plane.
At or on the side, usually from a stem.
adj. 1. situated at or relating to the side of an organ or organism. 2. (in anatomy) relating to the region or parts of the body that are furthest from the *median plane. See anatomical position. 3. (in radiology) in the *sagittal plane.