- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
conductive
-
dugout
-
achromatise
-
pilgrims
-
arrogance
-
rumor
-
69
-
acid hydrogen
-
plumb bob
-
persevere
- Hide translation
acid test
acid test /ˈæsɪd tɛst/
noun
-
A rigorous or crucial appraisal
(
acid test
)
a rigorous or crucial appraisal