[{"word":"perlite","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"An amorphous volcanic glass formed by the hydration of obsidian.","synonyms":[],"antonyms":[]},{"definition":"The lightweight insulating material and aggregate resulting from expanding perlite glass by heat.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/perlite"]}]