1895 N. Story-Maskelyne vii. §328 One of these varieties [of prismatids] includes the vertical or ortho-prism..usually distinguished as the prism-form.
1896 109 In the stipe and costa the cells are much elongated, prism-form with either square or wedge-shape ends, arranged in chains.
1992 7 Feb. 708/1 The Muskox intrusion is a prism-form layered mafic intrusion exposed along the Arctic Circle in Northwest Territories, Canada.