[{"word":"geochronology","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The science of dating samples of rock or sediment.","synonyms":[],"antonyms":[],"example":"Geochronology allows us to see more precisely how the world has evolved."},{"definition":"Any one of the methods by which the age of different samples of rock can be determined.","synonyms":[],"antonyms":[],"example":"The history of the East–Antarctic shield has been uncovered through uranium–lead geochronology."}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/geochronology"]}]