What term refers to someone elected to certain magistracies and subsequently a member of the senate in ancient Rome?

The term that refers to someone elected to certain magistracies and subsequently a member of the senate in ancient Rome is "Senator." In the context of Roman political structure, individuals who achieved certain positions within the magistracies were eligible for membership in the Senate, which was a central institution in Roman governance, responsible for advising in matters of state, financial policies, and legislation.

Senators were typically appointed based on their previous political and military achievements, often having served as consuls or praetors, which were among the higher-ranking magistracies. The Senate was composed of individuals who held significant experience and were integral to the political life of Rome, playing a crucial role in shaping the laws and policies of the Republic and later the Empire.

While patricians were members of the elite ruling class and plebeians represented the common people, they are not specifically tied to the institutional process of becoming a senator through the election of magistracies. The consul, while a significant title within the Roman framework, describes a specific elected office rather than the membership in the Senate itself. Therefore, "Senator" accurately captures the relationship between elected magistrates and their subsequent status as members of the Senate.