Los Angeles UK /lɒs ˈændʒɪliːz/US /lɔs ˈændʒələs/ noun3 •A city and port, the county seat of Los Angeles County, the largest city in California, and the 2nd largest in the United States, famed for being the center of the American film industry.It is projected that the ride from Los Angeles to Las Vegas on such a supertrain would take 75 minutes. — 2018 •Ellipsis of Los Angeles County: a county of California, United States. County seat: Los Angeles. •(US) Synonym of 688 formsLos Angeleses