Noun
special character (plural special characters)
(computing) A symbol that is not an alphanumeric character; a nonalphanumeric character.
Don't let your special character and values, the secret that you know and no one else does, the truth - don't let that get swallowed up by the great chewing complacency. Aesop
I shall miss all the people in it and the great fun we had doing it. I enjoyed playing the character very much. It was a very, very special character and a very special series. And the camaraderie of it all. I loved it. Derek Jacobi
The progress of the human mind, the revolutions which occur in the development of knowledge, give each century its special character. Henri de Saint-Simon