| sibilant | Hissing or whistling in character; denoting a form of rale. Origin: L. Sibilans (-ant-), pres. P. Of sibilo, to hiss (05 Mar 2000) |
|---|---|
| sibilant rale | A whistling sound caused by air moving through a viscid secretion narrowing the lumen of a bronchus. Synonym: whistling rale. (05 Mar 2000) |