The present participle of 'sum,' meaning the process of adding numbers together or briefly stating the main points of something.
From Latin summa meaning 'highest, top, sum total,' related to summus (highest). The mathematical sense developed from the idea of reaching the 'top' or final total of a calculation, while the summarizing sense evolved from the notion of capturing the 'highest points' of a topic.
The connection between mathematical summing and summarizing reveals how our minds naturally seek totality—whether in numbers or ideas. Both processes involve taking disparate elements and creating a unified whole, which explains why the same word serves both mathematical and rhetorical functions across many languages.
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