Definition of archistriatum in English:

archistriatum

Pronunciation /ˌɑːkɪstrʌɪˈeɪtəm/

noun

Anatomy Zoology
  • Originally: a region of the brain of reptiles and birds thought to represent an intermediate stage in the phylogenetic development of the corpus striatum of mammals. In later use specifically: a heterogeneous region of the avian brain having sensory-motor and limbic connections, and corresponding in part to the mammalian amygdala.

    The preferred name for this region of the avian brain is now arcopallium.

Origin

Early 20th century. From archi- + striatum, after German Archistriatum.