Home › Words › G › gigantoraptorgigantoraptorgigantoraptor means A gigantic birdlike theropod dinosaur, Gigantoraptor erlianensis, from the late Cretaceous period of China.Among words judged in Lexicurio's Arena, gigantoraptor ranks #16,730 of 42,749 for Qualifying.EtymologyFrom the genus name.nounA gigantic birdlike theropod dinosaur, Gigantoraptor erlianensis, from the late Cretaceous period of ChinaDefinitions & examples from Wiktionary (CC BY-SA 3.0).