from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, characterized by, or producing a hissing sound like that of (s) or (sh): the sibilant consonants; a sibilant bird call.
- n. A sibilant speech sound, such as English (s), (sh), (z), or (zh).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Characterized by a hissing sound such as the "s" or "sh" in sash or surge.
- n. A hissing sound such as the 's' or 'sh' in 'sash' or 'surge'.
from the GNU version of the Collaborative International Dictionary of English
- adj. Making a hissing sound; uttered with a hissing sound; hissing.
from The Century Dictionary and Cyclopedia
- Hissing; making or having a hissing sound: as, s and z are sibilant letters.
- n. An alphabetic sound that is uttered with hissing, as s and z, and sh and zh (in azure, etc.), also ch (tsh) and j (dzh).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')
- n. a consonant characterized by a hissing sound (like s or sh)
Latin sībilāns, sībilant-, present participle of sībilāre, to hiss.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin sībilāns, present active participle of sībilō ("I hiss"). (Wiktionary)