prismoidal


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pris·moid

 (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.
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.
References in periodicals archive ?
The computation of lake capacity has been made using the following prismoidal formula--V=h/3 {A1+A2+sqrt (A1*A2)} .
The average end area and the prismoidal formulas are suitable for making earthwork calculations, but these are time consuming.