1. write or print (an inscription) at the top of or on the outside of a document.
▪ write or print an inscription at the top of or on the outside of (a document): "he invariably will want to superscribe the memo with one of his banal mottoes"
▪ write or print (a letter, word, symbol, or line of writing or printing) above an existing letter, word, or line.
Word Originlate 15th century: from Latin superscribere, from super- ‘over’ + scribere ‘write’.