In Anatomy:
* Lateral: Medial refers to something being closer to the midline of the body. Lateral refers to something being farther from the midline.
* Distal: In the context of limbs, medial refers to something being closer to the body's center. Distal refers to something being farther from the body's center.
* Peripheral: This term encompasses both lateral and distal aspects, meaning away from the center of the body.
In Other Contexts:
* External: If "medial" is referring to an internal aspect, "external" would be the opposite.
* Superficial: If "medial" is referring to a deep location, "superficial" would be the opposite.
* Marginal: If "medial" refers to the central part of something, "marginal" would be the opposite, meaning on the edge.
To give you a more precise answer, please provide more context about where you encountered the term "medial."