|aˌnalənˈtȯidēə, -naˌlanˈ- noun plural
Usage: capitalized
Etymology: New Latin, from an- + allantois + -idea
: the division of Vertebrata, including amphibians, fishes, and cyclostomes, in which no allantois, or at most a rudimentary one, is developed — compare anamniota
• an·al·lan·toi·de·an -|tȯidēən adjective or noun