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[New Latin Mastodōn, genus name, Greek mastos, breast, nipple, + Greek odōn, odont-, tooth (from the nipple-shaped protrusions on the crowns of its molars).]
![]() | The American Heritage® Dictionary of the English Language, Fourth EditionCopyright © 2005, 2000 by Houghton Mifflin Company. Updated 2005. Published by Houghton Mifflin. All rights reserved. |