noun

diet

diet, eating habits, regimen

A healthy diet is important.

A healthy diet is important.

I'm going on a diet to lose weight.

I'm going on a diet to lose weight.

((a diet)) the food that a person or animal usually eats. A healthy diet is important.

((to be on a diet)) to be eating less food to lose weight. She is on a diet.

((to go on a diet)) to start eating less food to lose weight. I'm going on a diet.

Synonyms: nutrition, regimen, eating habits

From Greek 'diaita' meaning 'a way of life'. It originally referred to a whole lifestyle, not just food.

The word contains 'die'. A bad diet can lead to poor health, so it's a stark reminder.

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