Word Meaning

Meaning of "heptad" and the crossword clue

- Group of seven
- Groups of seven
- Set of seven
- A combining form from Gr. "epta`, seven.
- 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 iodic acid. Also used as an adjective.