n.
A parent of one's mother or father; a grandmother or grandfather.
grandparental grand'pa·ren'tal (-pə-rĕn'tl) adj.
grandparenthood grand'par'ent·hood' n.
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.
