pyx·is \ˈpiksə̇s\noun (pluralpyxi·des \-ksəˌdēz\) Etymology: Latin 1.: acetabulum 2a 2.[Medieval Latin, from Latin, box] a.: an often cylindrical and ornately decorated covered container used in ancient Greece and Rome (as for the storage of salves and toiletries) b.: pyx 1 3.[New Latin, from Latin, box] a.: pyxidium 1 b.: scyphus 2