From en.wikipedia.org:
[Wiktionary] TONUS is the Latin equivalent of the English word _tone_, and may
refer to:
- Muscle tone , the continuous and passive partial contraction of the muscles
- Arterial tone, the continuous and passive partial contraction of the arteriole s
- Tonicity , the ability of a solution to cause water movement
- The Pythagorean interval of 9/8
- A brand of fruit juice produced by the Lebedyansky division of PepsiCo in Russia
[disambig]