unessenˈtial adjective

1. Not of the essence
2. Inessential, not necessary, not important
3. Without being, immaterial (Milton, etc)

• radiotherapy
• radiothon
• radiothons
• radio-thorium
• radiotoxic
• radio wave
• radio waves
• radish
• radishes
• radium
• radium A
• radium B
• radium bomb
• radium bombs
• radium emanation
• radiums
• radius
• radiuses
• radius of curvature
• radius vector
• radius vectors
• radix
• radome
• radomes
• radon