septiplex

Variant of septuplex, itself an alternative formation to Classical Latin septemplex, from septem (“seven”) +‎ -plex (“-fold”). The use of short -i- instead of -u- in a word-internal syllable before -p- is a case of the so-called "sonus medius".

• (Classical Latin) IPA^(key): [ˈsɛp.tɪ.pɫɛks], [sɛpˈtɪp.ɫɛks]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈsɛp.ti.pleks], [sepˈtip.leks]

septiplex (genitive septiplicis, adverb septipliciter); third-declension one-termination adjective

1. (Medieval Latin, New Latin) alternative form of septemplex

Third-declension one-termination adjective.

• R. E. Latham, D. R. Howlett, & R. K. Ashdowne, editors (1975–2013), “septiplex”, in Dictionary of Medieval Latin from British Sources‎^[1], London: Oxford University Press for the British Academy, →ISBN, →OCLC