| ilium | <anatomy> The upper and largest, part of the bony pelvic girdle (iliac wing). The ilium articulates on its inner aspect with the sacrum (sacroiliac joint). (27 Sep 1997) |
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| arcuate line of ilium | The iliac portion of the linea terminalis of the bony pelvis. Synonym: linea arcuata ossis ilii. (05 Mar 2000) |
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| auricular surface of ilium | The irregular, L-shaped articular surface on the medial aspect of the ilium that articulates with the sacrum. Synonym: facies auricularis ossis ilii. (05 Mar 2000) |
| body of ilium | It forms the upper two-fifths of the acetabulum and joins the pubis and ischium in the acetabulum. It continues above into the ala or wing of the ilium. Synonym: corpus ossis ilii. (05 Mar 2000) |
| gluteal surface of ilium | The external surface of the wing of the ilium marked by the anterior, posterior and inferior gluteal lines that separate the origins of the gluteal muscles. Synonym: facies glutea ossis ilii. (05 Mar 2000) |
| wing of ilium | The upper flaring portion of the ilium. Synonym: ala ossis ilii. (05 Mar 2000) |
| sacropelvic surface of ilium | The medial surface of the ilium behind and below the iliac fossa; it includes the iliac tuberosity, the auricular surface and the smooth pelvic surface below and in front of the auricular surface. Synonym: facies sacropelvina ossis ilii. (05 Mar 2000) |
| supra-ilium | <anatomy> The cartilaginous cap at the sacral end of the ilium of some animals. Source: Websters Dictionary (01 Mar 1998) |
| os ilium | <anatomy> The upper and largest, part of the bony pelvic girdle (iliac wing). The ilium articulates on its inner aspect with the sacrum (sacroiliac joint). (27 Sep 1997) |