ˈ ̷ ̷ ̷ ̷ˌstīl noun
( -s )
Etymology: International Scientific Vocabulary ur- (II) + -style
1. : a long rodlike unsegmented bone representing a number of fused vertebrae that forms the posterior part of the vertebral column of frogs and toads
2.
a. : the hypural bone of a fish
b. : a similar bone formed by the fusion of two or more caudal vertebrae at the end of the tail in various extinct turtles