stru·thi·o·nes \ˌ ̷ ̷ ̷ ̷ˈōˌnēz\noun plural Usage: capitalized Etymology: New Latin, from Late Latin, plural of struthion-, struthio ostrich 1.in former classifications: a major division of Aves equivalent to Ratitae 2.in some classifications: a suborder or other group equivalent to Struthioniformes