octiplex

Variant of octuplex, from octō (“eight”) +‎ -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): [ˈɔk.tɪ.pɫɛks], [ɔkˈtɪp.ɫɛks]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈɔk.ti.pleks], [okˈtip.leks]

octiplex (genitive octiplicis, adverb octipliciter); third-declension one-termination adjective

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

Third-declension one-termination adjective.

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