All of the letters and letter combinations that represent a phoneme, as f, ph, and gh for the phoneme /f/.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "grapheme" in a sentence
"And the discovery of grapheme is one of those stories that makes you feel like you and I could do physics ..."
"The proponents of the hardwired-newborns view of how we organize recognition tend to point to the inferior temporal gyrus and the fusiform gyrus (also active in grapheme/color synesthesia!), a "small patch of right-brain tissue just behind the ear", as the place that holds the key to our ability to recognize things."
"The more common the digit, the more radiant the color in grapheme color synaesthesia"