(Greek: around, enclosing, surrounding, about, near, close; often used as a prefix)

abdominal fascia (s) (noun), abdominal fasciae (pl)
A sheet or band of connective tissue covering or binding together parts of the body, such as muscles or organs, that form part of the general layer which lines the walls of the abdominal cavity and covers the abdominal organs: The abdominal fascia is subdivided into "visceral abdominal fascia" (internal organs of the abdomen), "parietal abdominal fascia" (connective tissue lining the wall of the abdominal cavity), and "extraperitoneal fascia" (thin layer of connective tissue and adipose or fat tissue).

adominoperineal (s) (adjective) (not comparable)
Pertaining to the abdomen down to the perineum: Adominoperineal surgery had to be performed to save Jim's life because he had cancer in the lower section of his back passage which ended with a permanent colostomy.
aeroperitonia, aeroperitoneum (s) (noun) (no pl)
Distention of the peritoneal cavity caused by gas: Since Jane felt pain in the area of her stomach and intestines, she went to see her doctor who diagnosed her as having a case of aeroperitonia, which affects the peritoneum or, in other words, the membrane lining the abdominal cavity.
anoperineal (adjective) (not comparable)
A reference to the anus and the perineum: In his medical book, Jeff read about the anoperineal part of the body as being the excretory opening at the end of the alimentary canal and the region between the thighs, bounded in the male by the scrotum and anus, and in the female by the vulva and anus
Plastic surgery of the perineum involving the vagina.
Repair of a lacerated vagina and perineum.
Repair of an incised, or a ruptured, perineum and lacerated vulva; or repair of a surgical incision of the vulva and perineum.
A tumor composed of spindle cells with a rich vascular network, which apparently arises from pericytes.

It may be benign or malignant and usually occurs in the lower extremities or retroperitoneum.

A figure having a perimeter equal to that of another.
1. The study of isoperimeters.
2. Having equal perimeters of circumferences; such as, isoperimetrical figures or bodies.
1. That branch of geometry which deals with isoperimetrical figures, and the problems connected with them.
2. The science of figures having equal perimeters or boundaries.
metroperitoneal (adjective) (not comparable)
1. A reference to a woman's uterus and peritoneum (the membrane that lines the abdominal cavity and covers most of the abdominal organs): When Jenny was at the gynaecologist's, she was told that the metroperitoneal area in her body was totally healthy and that she could have a child whenever she wanted to!
2. Etymology: from the Greek peri-, meaning "around" + tonos, "a stretching" = "a stretching around".
Inflammation of the uterus and its peritoneal covering.
A reference to the mucoperichondrium.
Perichondrium having a mucosal surface, as that of the nasal septum.

Related "around, round, surrounding" units: ambi-; ampho-; circ-; circum-; cyclo-, -cycle; gyro-.