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

Examples of heptad in a Sentence

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

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'heptad.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


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

Dictionary Entries Near heptad

Cite this Entry

“Heptad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heptad. Accessed 14 Jun. 2024.

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