English edit

Etymology edit

inter- +‎ poriferous

Adjective edit

interporiferous (not comparable)

  1. (geology) lying between poriferous areas
    The poriferous zone at its broadest part is five eighths of the width of the interporiferous area. The interporiferous zone is widest at the margin, and is there a little more than twice the width of the broadest part of the poriferous zone.