* Heptagon: A seven-sided polygon.
* Heptameter: A line of poetry with seven metrical feet.
* Heptachord: A seven-note musical scale.
* Heptad: A group of seven.
* Heptalingual: Able to speak seven languages.
* Hepatitis: Inflammation of the liver (from the Greek "hepar" meaning "liver").
* Heptachromatic: Having seven colors.
Let me know if you'd like more examples or have other questions!