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The Collaborative International Dictionary
Nervimotion

Nervimotion \Ner`vi*mo"tion\ (n[~e]r`v[i^]*m[=o]"sh[u^]n), n. [Nerve + motion.] (Physiol.) The movement caused in the sensory organs by external agents and transmitted to the muscles by the nerves.
--Dunglison.

Wiktionary
nervimotion

n. (context physiology English) The movement caused in the sensory organs by external agents and transmitted to the muscles by the nerves.