touchstone suggests a simple test of the authenticity or value of something intangible.

Touchstone Imaging is your trusted diagnostic medical imaging partner, with centers in Texas, Colorado, Oklahoma, Montana, Arkansas, and Florida.

Parasmani (lit. 'Touchstone'), a 1963 Indian film.

Touchstone Counseling offers evidence-based mental health therapy for individuals, families, and children in Iowa, fostering authenticity, healing, and self-compassion.

TOUCHSTONE definition: 1. an established standard or principle by which something is judged: 2. an established standard…. Learn more.

TOUCHSTONE definition: a test or criterion for the qualities of a thing. See examples of touchstone used in a sentence.

touchstone (of/for something) something that provides a standard against which other things are compared and/or judged. Grammar was regarded as the touchstone of all language …

touchstone, n. & adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Use the noun touchstone to describe a basis for comparison. For example, a filmmaker's touchstone might be her all-time favorite movie; she wants her movie to be that good or similar …

touchstone (ˈtʌtʃˌstəʊn) n 1. a criterion or standard by which judgment is made