vestigial organ defined in 1951 yearvestigial organ - vestigial organ;
vestigial organ - Organ, the size, structure, and function of which have diminished and simplified in the course of evolution until only a trace remains. Such vestiges may still have important function in organizing embryonic development, even if their former adult function has disappeared.
near vestigial organ in Knolik
definition of word "vestigial organ" was readed 1955 times