Adjective
(mathematics, of a prism) Having a cap (in the shape of a pyramid) at each end
(chemistry, of a molecule) Having the shape of such a prism
Source: en.wiktionary.orgBrown-colored protactinium(III) iodide has been reported where protactinium ions are 8-coordinated in a bicapped trigonal prismatic arrangement. Source: Internet
The EsF 3 crystal structure is hexagonal, as in californium(III) fluoride (CfF 3 ) where the Es 3+ ions are 8-fold coordinated by fluorine ions in a bicapped trigonal prism arrangement. Source: Internet