Found 4 definitions starting with SX:

Skip to:S - SBSC - SESF - SHSI - SKSL - SNSO - SQSR - STSU - SWSXSYSZ

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one of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid
A ventricle
B maculation
C rung
D auspices