1. Of a chemical compound having a ring with seven members
   - seven-membered

See also: membered

• reform
• Reform Jew
• Reform Judaism
• reform movement
• reform school
• reform-minded
• reformable
• reformat
• reformation
• reformative
• reformatory
• reformed
• reformer
• reformism
• reformist
• reformulate
• refortify
• refract
• refractile
• refracting telescope
• refraction
• refractive
• refractive index
• refractiveness
• refractivity