Anat.
the part of the central nervous system, including the descending motor fibers other than those of the pyramidal tract, that regulates muscle tone, posture, and other aspects of body movement.
[ 1960-65 ]
EXTRAPYRAMIDAL SYSTEM
Meaning of EXTRAPYRAMIDAL SYSTEM in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012