sibilance
n. சீறொலி இயல்பு, 'உசு' ஒலிப்பண்பு.
Sib"i*lance, Sib"i*lan*cy, n. Defn: The quality or state of being sibilant; sibilation. Milton would not have avoided them for their sibilancy, he who wrote . . . verses that hiss like Medusa's head in wrath. Lowell.