Noun

• 1. relatively small dimension through an object as opposed to its length or width;

  "the tenuity of a hair"

  "the thinness of a rope"

• 2. the quality of lacking intensity or substance;

  "a shrill yet sweet tenuity of voice"- Nathaniel Hawthorne

• 3. a rarified quality;

  "the tenuity of the upper atmosphere"