Final answer:
The abbreviation of the medical term meaning pertaining to a side is S.
Step-by-step explanation:
The abbreviation of the medical term meaning pertaining to a side is S.
In medical terminology, the suffix -al is often used to indicate a condition or characteristic of a specific body part or system. In this case, the abbreviation S is short for lateral, which means pertaining to a side.
For example, if a patient has a right lateral ankle sprain, it means their ankle injury is on the right side.