motorium

mo·to·ri·um

noun \mō-ˈtōr-ē-əm\

plural -ria \-ē-ə\

Definition of MOTORIUM

1

: the part of an organism and especially the part of its nervous system that is concerned with movement as distinguished from that concerned with sensation

2

: a differentiated cytoplasmic area in certain protozoans that acts as a coordinating center analogous to the brain of higher animals