A person who serves as a senator together with another, or holds a joint senatorial position with a colleague.
From 'co-' (together) combined with 'senator' (an elected legislative representative), creating a term for shared or joint senatorial office.
While 'cosenator' is extremely rare in modern politics, the concept of co-leadership or shared authority appears in many cultures historically and today, showing how power-sharing arrangements have always been part of human governance.
Senator derives from Latin 'senex' (old man). Historically, only men served as senators; the male-coded suffix persists even as women entered the role.
Use 'senator' for all genders, or specify 'female senator' only when gender is contextually relevant. The term itself need not change.
["senator"]
Women have served as senators since 1920 (Hattie Caraway, first woman elected); acknowledge this when discussing legislative history.
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