• Webster's Revised Unabridged Dictionary
    • Quincuncial Having the form of a quincunx.
    • Quincuncial (Bot) Having the leaves of a pentamerous calyx or corolla so imbricated that two are exterior, two are interior, and the other has one edge exterior and one interior; as, quincuncial ├Žstivation.
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Century Dictionary and Cyclopedia
    • quincuncial Disposed so as to form a quincunx; arranged in a set of five; also, arranged in two sets of oblique rows, at right angles to one another, so that five together form a quincunx; in botany, sometimes noting a pentastichous arrangement of leaves; more often noting an estivation.
    • ***


Webster's Revised Unabridged Dictionary
L. quincuncialis, from quincunx,. See Quincunx


In literature:

Towards the tower Criere stood the orchard full of all fruit-trees, set and ranged in a quincuncial order.
"Gargantua and Pantagruel, Complete." by Francois Rabelais
Cells bi-multiserial, in the latter case quincuncial.
"Narrative Of The Voyage Of H.M.S. Rattlesnake, Commanded By The Late Captain Owen Stanley, R.N., F.R.S. Etc. During The Years 1846-1850. Including Discoveries And Surveys In New Guinea, The Louisiade Archipelago, Etc. To Which Is Added The Account Of Mr. E.B. Kennedy's Expedition For The Exploration Of The Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist To The Expedition. In Two Volumes. Volume 1." by John MacGillivray
The Rhomboidall protuberances in Pineapples maintaining this Quincuncial order unto each other, and each Rhombus in it self.
"The Works of Sir Thomas Browne" by Thomas Browne