The word "recipiomotor" is often misspelled due to its unusual pronunciation. The correct spelling is "reciprocating motor." The word is pronounced /rɪˈsɪprəˌkeɪtɪŋ ˈmoʊtər/ in IPA phonetic transcription. The "recip" in reciprocating means to move back and forth, while "motor" refers to a machine that produces motion. A reciprocating motor operates by moving a piston back and forth, converting internal combustion into rotational motion. It is commonly used in automobiles, airplanes, and other machines that require high power output with high reliability.
Relating to the reception of motor stimuli.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.