is the three meals of a day called breakfast lunch and dinner

Yes, the three main meals of a day are commonly referred to as:

1. Breakfast: Typically eaten in the morning, breakfast is often considered the first meal of the day after waking up.
2. Lunch: This meal is typically eaten around midday, serving as a break from work or other activities.
3. Dinner: Usually the largest and last meal of the day, dinner is traditionally eaten in the evening.

These are the standard names in many cultures, though there can be variations in how meals are defined and when they are eaten across different regions and cultures.