Cancersacrum Share Tweet 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.( SAY-krum )Source: NCI Dictionary of Cancer TermsSearch the Glossary of Medical Terms Previous: sacituzumab govitecan Next: safingol NewsletterSign up for the QuackTrack.org newsletter below! Click to commentLeave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ QuackTrack on TwitterTweets by QuackTrack_org Trending Posts