- the innermost parts, as of a temple
- things kept private or secret
Origin of penetraliaL, neuter plural of penetralis, penetrating, inward
- The innermost parts of a building, especially the sanctuary of a temple.
- The most private or secret parts; recesses: the penetralia of the soul.
Origin of penetraliaLatin penetralia, from neuter pl. of penetralis, inner, from penetrare, to penetrate; see penetrate.