PERITOMOUS
Pe*rit"o*mous, a. Etym: [Gr. Peri-, and Tome.] (Min.)

Defn: Cleaving in more directions than one, parallel to the axis.

PERITONAEUM
Per`i*to*næ"um, n. (Anat.)

Defn: Same as Peritoneum.

PERITONEAL
Per`i*to*ne"al, a. Etym: [Cf. F. péritonéal.] (Anat.)

Defn: Of or pertaining to the peritoneum.

PERITONEUM
Per`i*to*ne"um, n. Etym: [L. peritoneum, peritonaeum, Gr. (Anat.)

Defn: The smooth serous membrane which lines the cavity of the abdomen, or the whole body cavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed, or nearly closed, sac. [Written also peritonæum.]

PERITONITIS
Per`i*to*ni"tis, n. Etym: [NL. See Peritoneum, and -itis.] (Med.)

Defn: Inflammation of the peritoneum.