TONIC a.
ounds; specifically (Phon.), applied to, or distingshing, a speech sound made with tone unmixed and undimmed by obstruction, such sounds, namely, the vowels and diphthongs, being so called by Dr. James Rush (1833) " from their forming the purest and most plastic material of intonation."
TURKO-IRANIAN a.
Designating, or pert. to, a mixed racial type including the Afghans, and characterized chiefly by stature above mean, fair complexion, dark, or sometimes gray, eyes, brachycephaly, and very long, prominent, and moderately narrow nose.