[{"word":"preamplifier","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A voltage amplifier for amplifying a low-level input signal; its output is the input to a higher-level amplifier.","synonyms":[],"antonyms":[]}],"synonyms":["pre-amp"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/preamplifier"]}]