Definition for Heptade:

• hep'tad, n. the sum or number of seven: ( chem.) an atom, radical, or element having a combining power of seven. [ Fr.,-- Gr. heptas, heptados-- hepta, seven.]

Synonyms for Heptade:

• n.

  •seven (noun)
  • septuplicate,
  • hebdomad,
  • Septenary,
  • septenaries,
  • heptad.

• Other synonyms:

  •n.
  • seven.
  •Other relevant words:
  • septet,
  • seven-spot,
  • sevener,
  • vii,
  • week,
  • 7.