Pronunciation: si'nus, -ez
- A channel for the passage of blood or lymph, without the coats of an ordinary vessel; blood passages in the gravid uterus or those in the cerebral meninges.
- A cavity or hollow space in bone or other tissue.
- A dilation in a blood vessel.
- A fistula or tract leading to a suppurating cavity.
[L. sinus, cavity, channel, hollow]
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Examples: glitazone, GI cocktail, etc.