Which Is Twice a Day?

Twice-a-day usually means morning and evening, on arising and on going to bed, or even at breakfast and supper. For most of us, it is more convenient to remember to take our medicines according to some routine in our lives (for example, with teeth brushing in the morning and before bed) rather than by the clock.

Which is correct twice a day or twice in a day?

1 Answer. It is a valid phrase, but they mean different things. "Twice a day" means every day. "Twice in a day" would normally mean a specific day.

What is mean twice a day?

: two times every day The mail is delivered twice a day.