Webster's Revised Unabridged Dictionary · 1913

Phonogram

Phonogram , noun

[Phono- + -gram.]

1.
A letter, character, or mark used to represent a particular sound.
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. — I. Taylor (The Alphabet)
2.
A record of sounds made by a phonograph.