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sacellum

American  
[suh-kel-uhm, -sel-] / səˈkɛl əm, -ˈsɛl- /

noun

plural

sacella
  1. a small chapel, as a monument within a church.

  2. (in ancient Rome) a shrine open to the sky.


Etymology

Origin of sacellum

1800–10; < Latin: shrine, derivative of sacer holy, sacred; for formation castellum