Definitions

1. adjective

relating to or using a carbonless copy system, which produces a duplicate copy on turning the page

“The carbonless notebook allowed us to create a backup copy of every note we took.”

2. adverb

in a way that produces a duplicate copy

“She filled out the form carbonless, creating an extra copy for the office records.”

3. noun

a document or record produced by a carbonless copy system

“The carbonless copies of the receipts were used for accounting purposes.”