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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 ?
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.
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.