heptad

noun

hep·​tad ˈhep-ˌtad How to pronounce heptad (audio)
: a group of seven

Examples of heptad in a Sentence

Recent Examples on the Web
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The heptad repeats provide structure to the spike protein. William A. Haseltine, Forbes, 18 Mar. 2021

Word History

Etymology

Greek heptad-, heptas, from hepta

First Known Use

1660, in the meaning defined above

Time Traveler
The first known use of heptad was in 1660

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Cite this Entry

“Heptad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heptad. Accessed 4 Mar. 2025.

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