- Group of seven - Groups of seven - Set of 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.
- A group of seven - Composition for seven - Executive producer brought in to test new chamber group - Group of seven - Musical composition - Musical work - Set of seven