before vowels electr-, word-forming element meaning "electrical, electricity," Latinized form of Greek ēlektro-, combining form of ēlektron "amber" (see electric). As a stand-alone, formerly often short for electrotype, electroplate.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit lunati "cuts, cuts off," lavitram "sickle;" Greek lyein "to loosen, untie, slacken," lysus "a loosening;" Latin luere "to loose, release, atone for, expiate;" Old Norse lauss "loose, free, unencumbered; vacant; dissolute;" Old English losian "be lost, perish."
<a href="https://www.etymonline.com/word/electrolyte">Etymology of electrolyte by etymonline</a>
Harper, D. (n.d.). Etymology of electrolyte. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/electrolyte