Definition:
"The eversion process, in which the vulval invagination is turned inside out during the final molt, is disrupted. In C.elegans, such variations in vulval eversion are primarily due to developmental defects in the somatic gonad (and sometimes vulva)." [WB:cab, WB:
WBPaper00001738, WB:
WBPerson2021, WB:
WBPerson261]