the chitinous plate in arachnids that covers the opening to the female genital tract.
- Also ep·i·gyne [ep-i-jahyn]. /ˈɛp ɪˌdʒaɪn/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use epigynum in a sentence
The epigynum of this form was extremely undeveloped, having only a small epigastric furrow with depressions at either end.
The book-lungs openings are found on the ventral surface of the first abdominal segment, as is also the epigynum.
The epigynum consists of a long epigastric furrow with a large lip-like opening near its median line.
Its size and markings are the same, and the epigynum is like that of longipes.The Common Spiders of the United States | James Henry Emerton
The openings of the epigynum (fig. 273) are about their diameter apart.The Common Spiders of the United States | James Henry Emerton