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Si•nus Ir•i•dum



Pronunciation: (sē'nus ir'i-dum, sī'-), [key]
(Bay of Rainbows) a semicircular dark plain in the second quadrant of the face of the moon.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

sinussinusitis

 

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