ˌ ̷ ̷ ̷ ̷ˈsȯrəs noun
Usage: capitalized
Etymology: New Latin, from steg- + -saurus
: a genus of large ornithischian dinosaurs of the Upper Jurassic rocks of Colorado and Wyoming being remarkable for their dermal armor and in the best-known species ( S. ungulatus ) having two rows of bony plates along the back