penetralium

== English == === Pronunciation === IPA(key): /ˌpɛnɪˈtɹeɪliəm/ === Noun === penetralium (plural penetralia) the innermost (or most secret) part of a building; an inner sanctum; a sanctum sanctorum. == Latin == === Adjective === penetrālium genitive masculine/feminine/neuter plural of penetrālis