IPA: /ˈdɪnərˌtaɪm/
KK: /ˈdɪnərˌtaɪm/
The time when people usually eat their evening meal.
We always sit down together as a family at dinnertime.
Dinnertime → It is formed from "dinner" (from Old French *diner*, meaning to dine or have a meal) and "time" (from Old English *tima*, meaning a period or duration). The word "dinnertime" refers to the specific time designated for having dinner or the evening meal.
Think of 'dinner' as the meal you have and 'time' as the period for it — dinnertime is simply the time for your dinner.