Definitions

1. adjective

being at or near the back or rear part of an organism or object

“The posterior part of the animal’s body was badly injured in the accident.”

2. noun

the back or rear part of an organism or object

“The posterior of the car was badly damaged in the crash.”

3. noun

a nerve or part of the nervous system located at the back or rear of the body

“The posterior nerves of the spinal cord played a crucial role in the patient’s recovery.”