[f. as prec. + -ANCY.] The quality of being sonant.
1875. Whitney, Life Lang., iv. 59. A column of air emitted by the lungs, impressed with sonancy and variety of pitch by the larynx.
1884. Amer. Ann. Deaf & Dumb, Oct., 249. The sonants soft or flat, or weak, especially when the element of sonancy is suppressed.