Definition of signature noun from the Oxford Advanced Learner's Dictionary

      

    signature

     noun
    noun
    BrE BrE//ˈsɪɡnətʃə(r)//
     
    ; NAmE NAmE//ˈsɪɡnətʃər//
     
     
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  1. 1  [countable] your name as you usually write it, for example at the end of a letter Someone had forged her signature on the cheque. They collected 10 000 signatures for their petition. He was attacked for having put his signature to the deal. Can you witness my signature on my will, please?
  2. 2[uncountable] (formal) the act of signing something Two copies of the contract will be sent to you for signature.
  3. 3[countable, usually singular] a particular quality that makes something different from other similar things and makes it easy to recognize Bright colours are his signature. The signature flavours of Thai cookery are coriander and lime.
  4. see also digital signature, key signature, time signature
    Word Origin mid 16th cent. (as a Scots legal term): from medieval Latin signatura ‘sign manual’ (in late Latin denoting a marking on sheep), from Latin signare ‘to sign, mark’.Extra examples Each song bears the signature of its performer. The form requires the signatures of two witnesses. The law recognizes a digital signature for online transactions. The salesperson verifies the signature by comparing it with the one on the card. The will bears her signature. They collected over 1 000 signatures for the petition. We both refused to put our signatures to the agreement. Your signature must be witnessed by two people. the genetic signatures of natural selection
See the Oxford Advanced American Dictionary entry: signature