infratentorial

is likely misspelled.

has no English definition.

As an adjective infratentorial

is refers to a location below the tentorium cerebelli.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective infratentorial is

(anatomy) refers to a location below the tentorium cerebelli.

Supratentorial is a related term of infratentorial.

In anatomy terms the difference between infratentorial and supratentorial

is that infratentorial is refers to a location below the tentorium cerebelli while supratentorial is above the tentorium of the brain.