phonology
n. ஒலியியல், ஒலிவரலாற்று ஆய்வு.
Pho*nol"o*gy, n. Etym: [Phono- + -logy.] Defn: The science or doctrine of the elementary sounds uttered by the human voice in speech, including the various distinctions, modifications, and combinations of tones; phonetics. Also, a treatise on sounds.