noun. A part of the limbic system- a pear-shaped construction housed in the middle region of the temporal lobe within the brain- the primary groups of nuclei in the region are the corticomedial and basolateral groups. Via extensive junctions with other region of the brain, it has several viscerosensorial and involuntary operatives in addition to an imperative part it plays in memory, feelings, comprehension of threats, and intimidation learning. Commonly referred to as amygdaloid body.