From Latin bis in diē.

BID (not comparable)

1. (pharmacology) twice a day, two times per day

   Coordinate terms: QID, TID

   • 2014 April, Ken. Seufert, “The New Dawn of Pharmaceutical Manufacturing: Innovative Solutions for Unprecedented Challenges”, in American Pharmaceutical Review:

     It has been repeatedly documented that moving patients from a TID dosing regimen to BID or OD vastly improves compliance, and thus the medicine's effectiveness.

Commonly written as: “amoxicillin 500 mg BID”, read as: “500 milligram dosage of amoxicillin, taken two times a day” (totalling 1000mg).

BID (plural BIDs)

1. Acronym of business improvement district.

• DBI, DIB, Dib, IBD, IDB, dib

BID

1. initialism of Banco Interamericano de Desarrollo (“Inter-American Development Bank”)