accessory olivary nucleus
nounMedical Definition of accessory olivary nucleus
: any of several small masses or layers of gray matter that are situated adjacent to the inferior olive and of which there are typically two on each side:
a
: one situated on each side dorsal to the inferior olive
— called also dorsal accessory olivary nucleus
b
: one situated on each side medial to the inferior olive
— called also medial accessory olivary nucleus