cypher

1. a message written in a secret code

    Synonym: cipher

2. a secret method of writing

    Synonym: cipher cryptograph secret code

3. a person of no influence

    Synonym: cipher nobody nonentity

4. a quantity of no importance

    e.g. it looked like nothing I had ever seen before
           reduced to nil all the work we had done
           we racked up a pathetic goose egg
           it was all for naught
           I didn't hear zilch about it

    Synonym: nothing nil nix nada null aught cipher goose egg naught zero zilch zip zippo

5. a mathematical element that when added to another number yields the same number

    Synonym: zero 0 nought cipher

1. make a mathematical calculation or computation

    Synonym: calculate cipher compute work out reckon figure

2. convert ordinary language into code

    e.g. We should encode the message for security reasons

    Synonym: code encipher cipher encrypt inscribe write in code