1
- the kinds of food that a person, animal, or community habitually eats（人或动物的）日常食物, 日常饮食：
a vegetarian diet
素食者的日常食物
mass noun a specialist in diet.饮食专家。
1.1
- a special course of food to which a person restricts themselves, either to lose weight or for medical reasons（为减肥或因医疗原因的）特定饮食, 规定饮食：
I'm going on a diet.
我打算节食减肥。
1.2
- as modifier(of food or drink) with reduced fat or sugar content（食物或饮料）低脂的; 低糖的：
diet soft drinks.
低糖软饮料。
1.3
- figurative a regular occupation or series of activities to which one is restricted〈喻〉（老一套的）日常事务; 固定不变的活动：
youngsters are presented with a constant diet of insipid programmes.
提供给年轻人的是老一套枯燥无味的节目。
1
dieted, dieting
no obj. restrict oneself to small amounts or special kinds of food in order to lose weight（为减肥而）节食; 按特定食谱进食：it's difficult to diet.
节食是很难的。
1.1
- with obj. restrict (a person or animal) to a special diet给（人或动物）吃特定食物。
派生词
dieter
noun词源
Middle English: from Old French diete (noun )， dieter (verb)， via Latin from Greek diaita 'a way of life'.
1
- a legislative assembly in certain countries（某些国家的）国会, 议会。
1.1
- historical a regular meeting of the states of a confederation〈史〉结盟国家的定期会议。
1.2
- Scots Law a meeting or session of a court【苏格兰律】会议; （法院）开庭（期）。
词源
late Middle English: from medieval Latin dieta 'day's work, wages, etc.', also 'meeting of councillors'.