depressomotor

Century Dictionary and Cyclopedia

1. Causing a retardation of motor activity.
2. n. An agent which retards motor activity.

Wiktionary

1. adj. medicine Depressing or diminishing the capacity for movement.
2. n. medicine Any agent that depresses the activity of the motor centres.

GNU Webster's 1913

1. adj. (Med.) Depressing or diminishing the capacity for movement, as depressomotor nerves, which lower or inhibit muscular activity.