the largest city of pre-Columbian America, situated about 40 km (25 miles) north-east of Mexico City. Built circa 300 bc, it reached its zenith circa 300–600 ad, when it was the centre of an influential culture which spread throughout Meso-America. It was sacked by the invading Toltecs circa 900.
Teotihuacán in other Oxford dictionaries
Definition of Teotihuacán in the US English dictionary