pro·rep·til·ia \ˌprōˌrepˈtilēə\noun plural Usage: capitalized Etymology: New Latin, from pro- (I) + Reptilia in some classifications: a division of reptiles containing various extinct forms regarded as connecting the reptiles and amphibians • pro·rep·til·i·an\| ̷ ̷ˌ ̷ ̷|tilēən\adjective