Meaning

noun addition of extra material or illustration or clarifying detail

noun the amount of increase in signal power or voltage or current expressed as the ratio of output to input

noun (electronics) the act of increasing voltage or power or current

originEtymology tree Proto-Indo-European *h₃emh₃-der. Proto-Indo-European *h₃emh₃-lo-s Proto-Italic *amlos? Proto-Indo-European *h₂ent- Proto-Indo-European *-s Proto-Indo-European *h₂énts? Proto-Indo-European *h₂m̥bʰíder. Proto-Italic *amβi Latin ambi- Proto-Indo-European *pleh₁- Proto-Indo-European *-nós Proto-Indo-European *pl̥h₁nós Proto-Italic *plēnosder. Latin plēnus? Latin ambiplus? Latin amplus…

Etymology from Wiktionary, CC BY-SA 3.0