[{"word":"quaternion","phonetic":"/kwəˈtəːni.ən/","phonetics":[{"text":"/kwəˈtəːni.ən/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A group or set of four people or things.","synonyms":[],"antonyms":[]},{"definition":"A word of four syllables.","synonyms":[],"antonyms":[]},{"definition":"A four-dimensional hypercomplex number that consists of a real dimension and 3 imaginary ones (i, j, k) that are each an independent square root of -1. They are commonly used in vector mathematics and in calculating the rotation of three-dimensional objects.","synonyms":[],"antonyms":[]}],"synonyms":["foursome","tetrad"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/quaternion"]}]