Definition of "hipbone" [hipbone]

• Either of two large flat bones each forming one of the lateral halves of the pelvis and consisting of the fused ilium, ischium, and pubis. Also called innominate bone. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Bone marrow is removed from the bone (usually the hipbone) either by aspiration (suctioning a small amount through a hollow needle) or by biopsy (cutting out a small piece of bone marrow)."
• "Astronauts on International Space Station lose alarming amounts of hipbone strength, University of California-Irvine"
• "UC Irvine and UC San Francisco led a study evaluating 13 astronauts who spent four to six months on the International Space Station and found that, on average, astronauts 'hipbone strength decreased 14 percent."