[meg-uh-church] /ˈmɛg əˌtʃɜrtʃ/
an independent church with a very large membership in regular attendance, focusing on an evangelical or conservative Christian theology and offering a variety of educational and social activities.
(US) a church, usually Protestant, with a very large congregation, typically housed in a complex offering sophisticated multimedia presentations and a range of secular facilities and services
[meg-uh-sit-ee] /ˈmɛg əˌsɪt i/ noun, plural megacities. 1. a having a population of one million or more. /ˈmɛɡəˌsɪtɪ/ noun (pl) -cities 1. a city with over 10 million inhabitants n. also mega-city, 1968, from mega- + city.
megacolon meg·a·co·lon (měg’ə-kō’lən) n. Extreme dilation and hypertrophy of the colon.
[meg-uh-kawr-puh-rey-shuh n] /ˈmɛg əˌkɔr pəˌreɪ ʃən/ noun 1. a giant company formed from two or more large companies or a number of companies of various sizes.
[meg-uh-sahy-kuh l] /ˈmɛg əˌsaɪ kəl/ noun 1. Electricity. a unit of frequency, equal to one million per second; megahertz. The term megahertz is now preferred in technical use. Abbreviation: Mc, mc. n. 1928, from mega- + cycle (n.). megacycle meg·a·cy·cle (měg’ə-sī’kəl) n. See megahertz.