n.
A chromosome that is not a sex chromosome.
autosomal au'to·so'mal (-sō'məl) adj.
autosomally au'to·so'mal·ly adv.
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.