perineal

As a noun peritoneum

is (anatomy) in mammals, the serous membrane lining the cavity of the abdomen and that is folded over the viscera.

As an adjective perineal is

perineal.

As an adjective perineal is

perineal.

As adjectives the difference between pudendal and perineal

is that pudendal is (anatomy) relating to or near the pudendum while perineal is perineal.

As adjectives the difference between sacral and perineal

is that sacral is (anatomy) of the sacrum while perineal is perineal.

As a noun sacral

is any of the sacral bones that make up the sacrum.

As a noun perinea

is plural of perineum.

As an adjective perineal is

referring to the region of the perineum.

As adjectives the difference between pilonidal and perineal

is that pilonidal is having body hairs which have grown in a concentrated area on the skin and formed a cyst or abscess while perineal is referring to the region of the perineum.

As adjectives the difference between perineal and perineal

is that perineal is referring to the region of the perineum while perineal is referring to the region of the perineum.

As adjectives the difference between peritoneal and perineal

is that peritoneal is of, relating to, or affecting the peritoneum while perineal is referring to the region of the perineum.

As adjectives the difference between perineal and peroneal

is that perineal is referring to the region of the perineum while peroneal is of or pertaining to the fibula; fibular.