What does "testing" mean?

The act of conducting a test; trialing, proving.

Testing

Common synonyms include: analytic, analytical, contest, control, control experiment, controlled experiment.

//ˈtɛs.tɪŋ// adj, noun, verb

adj, noun, verb ·Moderate ·College level

Noun

1
The act of conducting a test; trialing, proving. countable, uncountable
"The wilderness testings of Jesus prepare him for ministry in which such temptations and shortcuts will recur."
2
the act of giving students or candidates a test (as by questions) to determine what they know or have learned wordnet
3
the act of subjecting to experimental test in order to determine how well something works wordnet
4
an examination of the characteristics of something wordnet

Verb

Adjective

1
Difficult; tough.
"England have now gone four games without a win at Wembley, their longest sequence without a victory in 30 years, and still have much work to do to reach Euro 2012 as they prepare for a testing trip to face Bulgaria in Sofia in September."