double prime


Definition of double prime

  1. :  the symbol ″ used to distinguish arbitrary characters (as a, a′, and a″), to indicate a specific unit (as inches), or to indicate the second derivative of a function (as p″ or f″(x)) — compare prime 7


First Known Use of double prime


Learn More about double prime

Seen and Heard

What made you want to look up double prime? Please tell us where you read or heard it (including the quote, if possible).