The amount of food or drink that is given to one person at a meal.
From 'serve' (Latin 'servire' meaning to work or be a servant) + '-ing' (gerund) + '-s' (plural). Originally referred to the act of serving food, which evolved to mean the portion itself.
Serving sizes on modern nutrition labels are often absurdly small compared to what people actually eat—a 'serving' is a scientific standard, not necessarily what fills your plate, which is why reading labels can be so deceptive.
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