He called H them parallelopipedons.
"Queed" by Henry Sydnor Harrison
The rock was 37 feet long, 22 high, and 21 broad, in the form of a parallelopipedon.
"Anecdotes of Painters, Engravers, Sculptors and Architects and Curiosities of Art (Vol. 3 of 3)" by S. Spooner
This object is made of a hard stone in the form of a perfect parallelopipedon with slightly rounded faces.
"Archeological Expedition to Arizona in 1895" by Jesse Walter Fewkes
I could tell the solid contents of a cube, of a parallelopipedon, of a pyramid, of a globe (nearly), of a cylinder, and of a cone.
"The Boy Tar" by Mayne Reid
Why, capture the Parallelopipedon, of course.
"In Camp With A Tin Soldier" by John Kendrick Bangs
What we saw was a rude parallelopipedon projected in dark silhouette against the moonlit sky.
"The Bandolero" by Mayne Reid