twice a day
used in writing prescriptions

Word History


Latin bis die

Dictionary Entries Near b.d.

Cite this Entry

“B.d..” Medical Dictionary, Merriam-Webster, Accessed 30 Nov. 2023.

More from Merriam-Webster on b.d.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!