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