The phrase 'in extremis' (Latin) meaning in a critical situation, at the point of death, or in dire circumstances requiring immediate action.
From Latin 'in extremis' meaning 'in the last/final state.' Extremis comes from extremus (outermost, last). Still used in English legal and medical contexts as a Latin phrase.
Lawyers and doctors still use 'in extremis' because it has a precise legal meaning—dying wishes made 'in extremis' have special weight in court, and soldiers operate 'in extremis' when under fire!
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