hep·tad (h p t d )n. A group or series of seven. [Greek heptas, heptad-, the number seven, from hepta, seven; see sept  in Indo-European roots.] |
heptad [ˈhɛptæd]
n
1. (Mathematics) a group or series of seven
2. (Mathematics) the number or sum of seven
3. (Chemistry) an atom or element with a valency of seven
[from Greek heptas seven]
heptad - the cardinal number that is the sum of six and oneHow to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
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