preperitoneal

pre·per·i·to·ne·al

(prē'per-i-tō-nē'ăl), Denoting a fatty layer between the peritoneum and the transversalis fascia in the lower anterior abdominal wall.

preperitoneal

(prē″pĕr-ĭ-tō-nē′ăl) [″ + Gr. peritonaion, peritoneum] Located in front of the peritoneum.