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Added 9 October 2026

tonus

noun

Latin root: tonus Wiktionary

noun Definition from WordNet 3.1, Princeton University. More about tonus at Wordnik → Where our words come from →

The elastic tension of living muscles, arteries, etc. that facilitate response to stimuli.
the doctor tested my tonicity

Origin

Borrowed from Latin tonus (“strain, tension”). Doublet of tone, tune, and ton (fashion/style).

From Wiktionary, via Kaikki.org (CC BY-SA)

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