Definitions for "Prefrontal"
Situated in front of the frontal bone, or the frontal region of the skull; ectethmoid, as a certain bone in the nasal capsule of many animals, and certain scales of reptiles and fishes.
A prefrontal bone or scale.
a roofing bone of the skull, located anteriorly
The extreme front of the brain. This part of the brain plays a part in many of the "highest" human functions such as planning, envisaging the consequences of actions, recognising the effects of one's behaviour on others, etc, etc. Damage here can leave the patient looking perfectly normal, yet rendering him profoundly inert, "concrete" and simplistic in thinking and behaviour. The resulting personal and social handicap can be very profound.