Plural of growth; multiple instances of development, increase, or something that has grown, including lumps or tumors on the body.
From 'growth' (Old English 'growan' meaning to grow) plus the regular plural suffix '-s.'
In medical contexts, 'growths' is the polite term doctors use for tumors or abnormal tissue development—it's a great example of how English allows us to talk about serious topics with softer language.
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