acid test

a

I. noun [in sing.]

1. a conclusive test of the success or value of something

gritstone is the acid test of a climber’s ability.
– origin figuratively, from the original use denoting a test for gold using nitric acid.

Add Comment

By Oxford

Oxford

Get in touch

Quickly communicate covalent niche markets for maintainable sources. Collaboratively harness resource sucking experiences whereas cost effective meta-services.