| 释义 |
phthonˈgometer rare.
[f. as prec. + -meter.]
A measurer of the intensity of vowel sounds.
1837Whewell Hist. Induct. Sc. (1857) II. 266 We may..consider this instrument as a phthongometer, or measure of vowel quality. 1848in Smart Supp., and in later Dicts. |