Origin: Latin suffix -al
Neurological has 2 different meanings across 1 category:
of or relating to or used in or practicing neurology
"neurological evidence"
Dealing with neurology, the study of the brain
"The neurological assessment revealed that her symptoms were caused by a disorder affecting the brain's ability to process signals."
In plain English: Neurological means anything related to how your brain and nervous system work.
"The neurological exam showed no signs of damage to her brain and nerves."
Usage: This adjective modifies conditions or disorders affecting the nervous system rather than general mental states. Avoid using it to describe psychological issues unless a clear organic basis in the brain is implied.
The word neurological comes from combining the field of study known as neurology with the suffix -ical to mean "relating to nerves or the nervous system." It entered English by adapting this existing scientific term into an adjective form.