phonogram

• POS: Noun
• HYPHEN: pho=no=gram

CIDE DICTIONARY

phonogram, n. [Phono- + -gram.].

•  A letter, character, or mark used to represent a particular sound.  [1913 Webster]

  "Phonograms are of three kinds: (1) Verbal signs, which stand for entire words; (2) Syllabic signs, which stand for the articulations of which words are composed; (3) Alphabetic signs, or letters, which represent the elementary sounds into which the syllable can be resolved."  [1913 Webster]
•  A record of sounds made by a phonograph.  [1913 Webster]

OXFORD DICTIONARY

phonogram, n. a symbol representing a spoken sound.