[syn: fricative, continuant, sibilant, spirant, strident]
The Collaborative International Dictionary of English v.0.48:
Continuant \Con*tin"u*ant\, a.
   Continuing; prolonged; sustained; as, a continuant sound. --
   n. A continuant sound; a letter whose sound may be prolonged.
   [1913 Webster]
WordNet (r) 3.0 (2006):
continuant
    adj 1: of speech sounds produced by forcing air through a
           constricted passage (as `f', `s', `z', or `th' in both
           `thin' and `then') [syn: fricative, continuant,
           sibilant, spirant, strident]
    n 1: consonant articulated by constricting (but not closing) the
         vocal tract [syn: continuant consonant, continuant]
         [ant: occlusive, plosive, plosive consonant, plosive
         speech sound, stop, stop consonant]