A Latin phrase meaning 'I am here' or 'I am present'; historically used in roll calls and formal proceedings.
Latin 'ad-' (to, at) + 'sum' (I am), literally meaning 'I am at [this place/meeting].' Still used in some academic ceremonies.
When Oxford or Cambridge call roll at formal ceremonies, hearing 'adsum' echoed back is hearing 2,000-year-old Latin still functioning as punctuation—no translation needed, just presence announced.
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