(ˈ)kwin|kənchəl adjective
or quin·cunx·ial -əŋ(k)sēəl
Etymology: quincuncial from Latin quincuncialis, from quincunc-, quincunx + -alis -al; quincunxial from Latin quincunx + English -al
1. : relating to, consisting of, or arranged in a quincunx or quincunxes
2.
a. : having the members so imbricated that two are exterior, two are interior, and the other has one edge exterior and one interior — used of a pentamerous calyx or corolla
quincuncial estivation
b. : pentastichous
• quin·cun·cial·ly -chəlē adverb