ILEUM
Il"e*um, n. Etym: [L. ile, ileum, ilium, pl. ilia, groin, flank.]

1. (Anat.)

Defn: The last, and usually the longest, division of the small intestine; the part between the jejunum and large intestine. [Written also ileon, and ilium.]

2. (Anat.)

Defn: See Ilium. [R.]

Note: Most modern writers restrict ileum to the division of the intestine and ilium to the pelvic bone.

ILEUS
Il"e*us, n. Etym: [NL., fr. Gr. (Med.)

Defn: A morbid condition due to intestinal obstruction. It is characterized by complete constipation, with griping pains in the abdomen, which is greatly distended, and in the later stages by vomiting of fecal matter. Called also ileac, or iliac, passion.

ILEX I"lex, n. Etym: [L., holm oak.] (Bot.) (a) The holm oak (Quercus Ilex). (b) A genus of evergreen trees and shrubs, including the common holly.

ILIAC
Il"i*ac, a. Etym: [L. Iliacus, Gr. Iliad.]