Source:http://linkedlifedata.com/resource/umls/id/C0036037
NCI: The triangular bone, made up of 5 fused bones of the spine, located in the lower area of the spine between the fifth lumbar vertebra and the coccyx. (NCI),NCI: The large, triangle-shaped bone in the lower spine that forms part of the pelvis. It is made of 5 fused bones of the spine.,NCI: The triangular bone, made up of 5 fused bones of the spine, located in the lower area of the spine between the fifth lumbar vertebra and the coccyx.,NCI: One of the five bones of the spine that fuse to create the sacrum.