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tonsillitis
[ noun ]
inflammation of the tonsils (especially the palatine tonsils)
<noun.state> 
Tonsillitis \Ton`sil*li"tis\, n. (Med.)
Inflammation of the tonsils; --- same as {tonsilitis}.
[PJC]
Tonsilitis \Ton`sil*i"tis\, n. [NL. See {Tonsil}, and {-itis}.]
(Med.)
Inflammation of the tonsils; quinsy. [Written also, and more
usually, {tonsillitis}.]