"ad invicem" meaning in Latin

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  "etymology_text": "From ad + invicem.",
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        "2": "Late Latin, Medieval latin"
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  "pos": "adv",
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          "english": "They immediately befriended each other, and, having disarmed their troops, went to the city of Trinovantum.",
          "ref": "12th century, Geoffrey of Monmouth, De Gestis Britonum III",
          "text": "Nec mora, amici facti sunt adinvicem et cohortibus exarmatis urbem Trinovantum venerunt.",
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        "mutually, each other, reciprocally, one another"
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  "etymology_text": "From ad + invicem.",
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