The Collaborative International Dictionary
Self-motion \Self`-mo"tion\, n. Motion given by inherent power, without external impulse; spontaneous or voluntary motion.
Matter is not induced with self-motion.
--Cheyne.
Wiktionary
n. motion given by inherent powers, without external impulse.
Wikipedia
Self-motion can refer to:
- The property of motion being inherent in a particular entity, being voluntary. For example, a mouse can have self-motion, a stone cannot
- The experience of self-motion, as in illusions of self-motion
Usage examples of "self-motion".
Tear up the tracks, build a Lubro or an Oiler stationary for each squatty fixed machine and service these automatic tube ejectors from a Central Supply, using as many self-motion helicopters as would be required.
Then the mass of brick-work which had struck him down, grew visible at his side, enlarged to an enormous bulk, and endued with a power of self-motion, by which it mysteriously swelled and shrank, and raised and depressed itself, without quitting for a moment its position near him.