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A group or series of six.

[Late Latin hexas, hexad-, the number six, from Greek, from hex, six; see s(w)eks in Indo-European roots.]

hex·ad′ic (hĕk-săd′ĭk) adj.


1. (Mathematics) a group or series of six
2. (Mathematics) the number or sum of six
[C17: from Greek hexas, from hex six]
hexˈadic adj


(ˈhɛk sæd)

a group or series of six.
[1650–60; < Late Latin hexad-, s. of hexas < Greek hexás=héx six + -as -ad1]
hex•ad′ic, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hexad - the cardinal number that is the sum of five and onehexad - the cardinal number that is the sum of five and one
digit, figure - one of the elements that collectively form a system of numeration; "0 and 1 are digits"
References in periodicals archive ?
The seventh hero, Percival (based on her brother Thoby Stephen, who had died tragically in 1910), is the hub holding the perfect hexad together from disintegrating.
Cell proliferation was measured in hexad by MTS assay in 96-well plates using MTS-based CellTiter 96[R] AQueous nonradioactive cell proliferation assay (Promega Corp.
Kate Frost sees the number 23 as both prominent in Donne's personal numerological system (citing Devotions as a set of 23 three-part essays) and as a significant number within medieval numerologies: "Twenty-three is considered as the sum of its integers, that is 2+3," and so "the resulting number is traditionally associated with Justice, and ultimately with the hexad and the Final Judgement" (136).
Burke later added a sixth term, attitude (the agent's attitude toward the act), thus changing the pentad into a hexad.
If it was used primarily for grain, a square corner can be hard to clean out, and like the livestock, corners can be harder to get the air to circulate through the grain (possibly) making it more prone to spoilage," says Walt Bones of Hexad Farms, Parker, South Dakota, owner of another beautifully preserved structure.
While the first six "lives" parallel the Roman biographer, the second hexad is more eclectic.
That, however, is not the way of Stan Tracey who brings to Birmingham his latest project, Hexad, the title of an album he recorded in the 1980s featuring a line-up of some of the best young musicians around to breathe fresh life into his original compositions.