acid test
noun
a severe and conclusive test to establish quality, genuineness, worth, etc.
Origin of acid test
First recorded in 1890–95
Words nearby acid test
acid rock,
acid salt,
acid soil,
acid stain,
acid sulfate,
acid test,
acid test ratio,
acid tide,
acid trip,
acid washing,
acid-ash diet
Example sentences from the Web for acid test
They are the acid-test, by which the presence of empire may be determined.
The American Empire |Scott Nearing
British Dictionary definitions for acid test
acid test
noun
a rigorous and conclusive test to establish worth or value
the play passed the critic's acid test
Word Origin for acid test
C19: from the testing of gold with nitric acid
Idioms and Phrases with acid test
acid test
A decisive trial to determine worth or quality, as in Exposure to brilliant sunlight is the acid test for showing this fabric won't fade. Alluding to a 19th-century chemical test for distinguishing gold from other metals, this term was used figuratively by the early 1900s.