IPA: /ˈmiːltaɪm/
KK: /ˈmiːlˌtaɪm/
The regular time when people eat their meals.
We always gather as a family during mealtime to share stories.
Mealtime is formed from "meal" (from Old English *mæl*, meaning a portion of food) and "time" (from Old English *tima*, meaning a period or duration). The word "mealtime" refers to the specific time designated for eating a meal.
Think of a 'portion of food' ('meal') that is eaten during a 'period' ('time') — that's what mealtime means.