solmization

英 [,sɒlmɪ'zeɪʃ(ə)n] 美[,sɑlmɪ'zeʃən]

solmization (n.): "act of using certain syllables to name tones of a music scale," 1730, from French solmisation, from solmiser, from sol + mi, two of the syllables so used (see gamut).