senatus populusque romanus

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From senātus (“senate”) populus (“people”) + -que (“and”) rōmānus (“Roman”). Hence literally, “The Roman Senate and People”.

• (Classical Latin) IPA^(key): /seˈnaː.tus po.puˈlus.kʷe roːˈmaː.nus/, [s̠ɛˈnäːt̪ʊs̠ pɔpʊˈɫ̪ʊs̠kʷɛ roːˈmäːnʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /seˈna.tus po.puˈlus.kwe roˈma.nus/, [seˈnäːt̪us popuˈluskwe roˈmäːnus]

senātus populusque rōmānus

1. The Roman Senate and People