Group of seven

• Series of seven
• Set of seven
• Quintet plus two
• Any group of seven
• Disney's dwarfs, e.g.
• The Seven Dwarfs, e.g.
• The cardinal number that is the sum of six and one
• Boss welcomes training group

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Heptad \Hep"tad\, n. [L. heptas the number seven. Gr. ?, ?, fr. "epta` seven.] (Chem.) 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 ...

Wiktionary Word definitions in Wiktionary
n. a group of seven things