pro-form

[proh-fawrm]
noun Grammar.
  1. a word used to replace or substitute for a word, phrase, or clause belonging to a given grammatical class, as a pronoun used to replace a noun or noun phrase, there used to replace an adverb or adverbial phrase of place, as in I parked the car near the entrance and left it there, or so used to substitute for a clause, as in Have they come? I think so.

Origin of pro-form

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pro-form

pro-form

noun
  1. a word having grammatical function but assuming the meaning of an antecedent word or phrase for which it substitutesthe word ``does'' is a pro-form for ``understands Greek'' in ``I can't understand Greek but he does''
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012