sinusitis

n [U] inflammation of a sinus membrane 窦炎.

singlet, singsong, singular, singularity, singularly, sinister, sink, sink in, sinker, sinkhole, sinking, sinking fund, sinlessness, sinner, Sino- (also sino-), sinologist, sinology, sinuosity, sinuous, sinus, sip, siphon, sir, sire, siren, sirloin, sirocco, sirup, sisal, sissy (also cissy), sister, sister-in-law, sisterhood, sisterly, sit, sit down, sit down on, sit for, sit in, sit on,