/ ˌkɒnfəˈmeɪʃn; NAmE ˌkɑːnfərˈm-/ noun [ U , C ]
1.
a statement, letter, etc. that shows that sth is true, correct or definite :
I'm still waiting for confirmation of the test results.
2.
a ceremony at which a person becomes a full member of the Christian Church
3.
a Jewish ceremony similar to a bar mitzvah or bat mitzvah but usually for young people over the age of 16
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WORD ORIGIN
Middle English : via Old French from Latin confirmatio(n-) , from confirmare make firm, establish from con- together + firmare strengthen.