phonogram

noun

pho·​no·​gram ˈfō-nə-ˌgram 

1

: a character or symbol used to represent a word, syllable, or phoneme

2

: a succession of orthographic letters that occurs with the same phonetic value in several words (such as the ight of bright, fight, and flight)

Word History

Etymology

phono- + -gram, after phonography

First Known Use

1864, in the meaning defined at sense 1