To test out is to try something to see whether it works. Test out the idea first.
It is done small before being done large, which is the whole value. To test out an idea on one person is cheaper than finding out from a hundred.
1phrasetest outTo try something to see whether it works.
“They test out every recipe twice before it goes in the book.”
test out is a phrase.
Practised in Phrasal Verbs