Definition of illegal. : not according to or authorized by law : unlawful, illicit; also : not sanctioned by official rules (as of a game)
antibiotic. n. 1. (Pharmacology) any of various chemical substances, such as penicillin, streptomycin, chloramphenicol, and tetracycline, produced by various microorganisms, esp fungi, or made synthetically and capable of destroying or inhibiting the growth of microorganisms, esp bacteria. adj.
Antibiotics are a category of drugs which are referred to as âantimicrobials,â which means they inhibit the growth of or kills bacteria, without causing significant damage to the person (host). Fermented foods: these are foods that are prepared with microorganisms, mainly bacteria. The foods can also be considered as a form of natural antibiotics because they reintroduce friendly bacteria into the body.