Definition of "lobule" [lob•ule]

• A small lobe. (noun)
• A section or subdivision of a lobe. (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.

• "The lobule is the smallest division of the lung and is formed by capillary bronchial tubes, air cells and blood-vessels."
• "Useful signals were also recorded from another region called the inferior parietal lobule, which is known to help guide limb movement."
• "Across the intertragical notch is the prominence known as the antitragus, part of the stiff cartilaginous shelf from which hangs the fleshy auricular lobule earlobe."