prismoid

US:USA pronunciation: respellingUSA pronunciation: respelling(priz′moid)


WordReference Random House Unabridged Dictionary of American English © 2026
pris•moid  (priz′moid),USA pronunciation n. [Geom.]
  1. Mathematicsa solid having sides that are trapezoids and bases or ends that are parallel and similar but not congruent polygons. Cf. prism (def. 2).
  • prism + -oid 1695–1705
pris•moi′dal, adj. 

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