testing

noun

1
the act of giving students or candidates a test (as by questions) to determine what they know or have learned
2
the act of subjecting to experimental test in order to determine how well something works
they agreed to end the testing of atomic weapons
3
an examination of the characteristics of something
there are laboratories for commercial testing
it involved testing thousands of children for smallpox

Also useful for “testing”:Unscrambler— Rearrange the letters in “testing”