What key factor generally differentiates a meal from a snack?
Answer
Perceived size and substance.
Meals are generally understood to be larger, more varied, and more filling compared to the quick nature of a snack.

Related Questions
What two interconnected concepts define the idea of a meal?How is a dish generally defined in relation to a meal?What key factor generally differentiates a meal from a snack?What was the original meaning of 'luncheon,' from which 'lunch' is abbreviated?How did industrialization affect the timing of the main meal, dinner?Globally, what types of food often constitute breakfast?In contexts where dinner is the evening meal, what is the midday meal typically called?What word rooted in Old English referred to an 'appointed time' for eating?What three criteria do people often rely on when naming their eating events?What method, besides using heat, can be used to prepare food chemically for consumption?