Meaning of sepulchrum in English:

sepulchrum

Pronunciation /sɪˈpʌlkrəm/

noun

(also sepulcrum)
historical Roman Catholic Church
  • A square or oblong cavity in an altar containing a relic or relics placed there at the altar's consecration. Compare altar cavity , "sepulchre".

Origin

Mid 19th century; earliest use found in The Dublin Review. From post-classical Latin sepulcrum, sepulchrum.