prismoid

pris·moid

P0567400 (prĭz′moid′)n. A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.

---

[prism + -oid.]

---

pris·moi′dal (-moid′l) adj.

prismoid

(ˈprɪzmɔɪd) n (Mathematics) a prismatoid having an equal number of vertices in each of the two parallel planes and whose sides are trapeziums or parallelograms[C18: from French prismoïde; see prism, -oid] prisˈmoidal adj

pris•moid

(ˈprɪz mɔɪd)

n. a solid having sides that are trapezoids and bases or ends that are parallel and similar but not congruent polygons. Compare prism (def. 2). [1695–1705] pris•moi′dal, adj.

Thesaurus

Noun

1.

prismoid - a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelogramsprismatoid - a polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoid