The meaning of HEPTAD is a group of seven.

Look up heptad, heptads, heptade, or heptades in Wiktionary, the free dictionary.

3 meanings: 1. a group or series of seven 2. the number or sum of seven 3. an atom or element with a valency of seven.... Click for more definitions.

heptad, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Heptad noun an atom which has a valence of seven, and which can be theoretically combined with, substituted for, or replaced by, seven monad atoms or radicals; as, iodine is a heptad in …

Define heptad. heptad synonyms, heptad pronunciation, heptad translation, English dictionary definition of heptad. n. A group or series of seven. American Heritage® Dictionary of the …

Sep 21, 2025 · “Heptad” is commonly used in mathematical and scientific contexts to denote a group of seven objects or elements. In literature, a heptad can refer to a seven-part structure …