[{"word":"a.u.","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Initialism of arbitrary unit.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]},{"partOfSpeech":"noun","definitions":[{"definition":"Abbreviation of atomic units.","synonyms":[],"antonyms":[]},{"definition":"Abbreviation of absorbance units.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]},{"partOfSpeech":"noun","definitions":[{"definition":"A hypothetical world situated in a different dimension of space and time than the real world consisting of the universe known and experienced by human beings.","synonyms":[],"antonyms":[]},{"definition":"An imaginary realm, often a variant form of the real world, depicting a different way events could have unfolded or the universe could have functioned.","synonyms":[],"antonyms":[]}],"synonyms":["parallel universe"],"antonyms":[]},{"partOfSpeech":"noun","definitions":[{"definition":"A unit of length equal to 10−10 meters (that is, one ten-billionth of a meter), approximately the size of an atom, and denoted by the symbol Å, used especially to measure the wavelength of electromagnetic radiation or distances between atoms.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]},{"partOfSpeech":"noun","definitions":[{"definition":"149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.","synonyms":[],"antonyms":[]}],"synonyms":["A. U.","a. u.","A.U.","a.u.","AU","au","ua","㍳"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/AU","https://en.wiktionary.org/wiki/a.u.","https://en.wiktionary.org/wiki/alternate%20universe","https://en.wiktionary.org/wiki/angstrom","https://en.wiktionary.org/wiki/angstrom%20unit","https://en.wiktionary.org/wiki/astronomical%20unit"]}]