Antibiotic/ˌæntibaɪˈɑːtɪk,ˌæntaɪbaɪˈɑːtɪk/ Definition 1 of 2Pro Tip 1/3Usage Frequency The term 'antibiotic' is common in medical contexts but not in everyday conversation. In the hospital, antibiotics are used daily. Pro Tip 2/3Warnings of Overuse When discussing antibiotics, there's often a warning against overuse to prevent resistance. Overusing antibiotics can lead to antibiotic resistance. Pro Tip 3/3Non-Applicability Antibiotics treat bacterial infections, not viruses like the flu or common cold. Colds are viral, so antibiotics won't help.