American English

Definition of countersign verb from the Oxford Advanced American Dictionary



countersign something (technology)Verb Forms present simple I / you / we / they countersign
he / she / it countersigns
past simple countersigned
-ing form countersigning
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to sign a document that has already been signed by another person, especially in order to show that it is valid All orders must be countersigned by one of the directors.
See the Oxford Advanced Learner's Dictionary entry: countersign