Definify.com
Webster 1913 Edition
Self-motion
Selfˊ-mo′tion
,Noun.
Motion given by inherent power, without external impulse; spontaneous or voluntary motion.
Matter is not induced with
self-motion
. Cheyne.
Webster 1828 Edition
Self-motion
SELF-MO'TION
,Noun.
Matter is not indued with self-motion. Cheyne.