Webster
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Webster’s Revised Unabridged Dictionary · 1913

Motor

Mo′tor, n. [L., fr. movere, motum, to move.] 1. One who, or that which, imparts motion; a source of mechanical power.

2. (Mach.) A prime mover; a machine by means of which a source of power, as steam, moving water, electricity, etc., is made available for doing mechanical work.

Mo′tor (mō′tẽr), Mo′to·ry, Mo·to′ri·al, a. [L. motorius that has motion. See Motor, n.] Causing or setting up motion; pertaining to organs of motion; — applied especially in physiology to those nerves or nerve fibers which only convey impressions from a nerve center to muscles, thereby causing motion.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.