tonus /tōˈnəs/ (medicine)

1. The normal elasticity of healthy muscle at rest, tonicity
2. Atonic spasm

• uprouses
• uprousing
• uprun
• uprunning
• upruns
• uprush
• uprushed
• uprushes
• uprushing
• upryst
• ups
• UPS
• ups-a-daisy
• ups and downs
• upscale
• upsee
• upsees
• upsell
• upselling
• upsells
• upsend
• upsending
• upsends
• upsent
• upset