decahedral
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dec·a·he·dron
(dĕk′ə-hē′drən)n. pl. dec·a·he·drons or dec·a·he·dra (-drə)
A polyhedron with ten faces.
dec′a·he′dral adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.