peri- +

The introduction of oxygen into the peritoneal cavity.

Inflammation of the tissues surrounding or around gland.

A reference to the area around the tunica adventitia of a blood vessel.

The adventitia is the outermost connective tissue covering any organ, vessel, or other structure not covered by a serosa; instead, the covering is properly derived from outside; that is, from the surrounding connective tissue and does not form an integral part of such an organ or a structure.

Excessive or intense pain.

Inflammation centered around a foreign body.

Around or close to the anus.

Inflammation of the tissue adjacent to the bile ducts.

A tumor surrounding a blood vessel.

1. Inflammation of the outer coat of or the tissues around a blood or lymph vessel.
2. Inflammation of the adventitia (outermost connective tissue covering) of a blood vessel or of the tissues surrounding it or a lymphatic vessel.

The outer envelope of a flower, consisting of either the calyx (sepals of one flower collectively) or the corolla (petals of a flower collectively), or both.

Around the aorta.

Inflammation of the outer coat of the aorta and of its surrounding structures.

The part of the periodontal ligament and alveolar bone surrounding the apex of a tooth.

Situated near or around the apex of a tooth root.

Inflammation of the tissue surrounding the vermiform appendix (wormlike intestinal diverticulum extending from the blind end of the cecum; it varies in length and ends in a blind extremity).

The cecum is a blind pouch-like commencement of the colon in the right lower quadrant of the abdomen at the end of the small intestine.