pentagonal

comparative more pentagonal · superlative most pentagonal

1. Of, relating to, or shaped like a pentagon.

   Seed micromorphology:—Seed coat is laticostate. Epidermal cells are elliptical to irregularly pentagonal. Cell walls are thickened mostly at the corners, the boundaries are raised […]

   2018, B Özüdoğru, “Phylogenetic position, taxonomy, distribution, and conservation status of the rare and poorly-known Noccaea rosularis, the generic type of Masmenia …”, in Phytotaxa

   1 more example

   If the base be a triangle, it is called a triangular prism; if a square, a square prism; if a pentagon, a pentagonal prism; and' if the base is any irregular figure, it is called an irregular prism : ...

   1850, John Radford Young, An introductory treatise on mensuration, in theory and practice, page 115

plural pentagonals

1. Something having the shape of a pentagon.

   The pentagonals with the flowers and the leaves of the central calyx are gilded all over, as is the inner lip of the vessel.

   1993, Michael Pfrommer, Metalwork from the Hellenized East: Catalogue of the Collections, page 188

   1 more example

   Speaking of protection, note that not only are the end pentagonals surrounded by a generous air space, but the entire instrument is insulated, […]

   1941, Steel, volume 109, page 59