From Longman Dictionary of Contemporary Englishdinnertimedin‧ner‧time /ˈdɪnətaɪm $ -ər-/ noun [uncountable] DFTMCthe time when you usually have dinner, especially in the middle of the day Do you want to go for a drink at dinnertime?
Examples from the Corpus
dinnertime• Jerry and Dave usually visit around dinnertime.• As dinnertime approaches, we cheer up.• So, countless times she gave up her own food when an unexpected guest arrived at dinnertime.• The same food is served for $ 1 more per item at dinnertime.• He always seems to call me at dinnertime.• I'd been over the pub at dinnertime.• It took them from breakfast to dinnertime to teatime to get everybody.• I was even beginning to consider myself freed, until dinnertime that evening. 