LIFE What do tid mean? InsuNews May 23, 2022 What do tid mean? three times a day Medical Definition of tid three times a day —used in writing prescriptions. See also Do most life insurance policies cover death by pandemic? Post navigation Previous: What does AD mean in nursing?Next: How does life insurance work in Australia? More Stories LIFE Who is the biggest insurance underwriter for? InsuNews May 23, 2022 LIFE What is whole term life insurance? InsuNews May 23, 2022 LIFE How does whole life and term life insurance work? InsuNews May 23, 2022