Proof reading is the process of carefully reviewing written material to identify and correct errors in grammar, spelling, punctuation, and formatting. The term PROOF READ is composed of two words: PROOF and READ. The word PROOF is a noun that refers to evidence or an argument that supports a conclusion. The word READ is a verb that means to look at and understand the meaning of written or printed words. Together, these two words form the term PROOF READ, which is the act of carefully examining written material for errors.