n.
Any of the excretory tubules leading from the posterior portion of the alimentary canal of insects and other arthropods. Also called Malpighian tubule.
[After Marcello MALPIGHI.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.