Corpus Christi cor·pusch·risti US/ˈkɔrpʌˈskrɪsti/ uncommon noun 1. Thursday after Trinity Sunday; first celebrated in 1246 SynonymsCorpus Christi 2. a city in southern Texas on an arm of the Gulf of Mexico SynonymsCorpus Christi Related words Broader terms cityChristian holy day Parts Texas WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.