Entry 1 sense Webster, 1913 Meteorite /mēt'-ē-ôr-ītˌ/ · Me·te·or·ite · IPA /ˈmi.ti.əˌɹaɪt/ 01 n. A mass of stone or iron which has fallen to the earth from space; an aerolite. 1. A mass of stone or iron which has fallen to the earth from space; an aerolite.(Min.)