What does biologic mean?
A biologic is a medicine manufactured from living sources rather than synthesized purely through chemistry. The term covers a wide range of products — vaccines, blood components, monoclonal antibodies, cell and gene therapies, and recombinant proteins such as insulin. Because biologics are large, complex molecules produced by living cells, even minor changes in manufacturing can affect them, so regulatory agencies treat them differently from conventional drugs; copies of approved biologics are called biosimilars rather than generics. In clinical settings, doctors may prescribe a biologic for conditions like rheumatoid arthritis, psoriasis, Crohn's disease, or cancer, typically when older small-molecule treatments have not worked. As an adjective, biologic simply means relating to biology or living organisms, though this sense is now largely superseded by 'biological'. The word is most at home in medical, pharmaceutical, and regulatory language.
A medicinal product derived from living organisms, cells, or their products, including vaccines, monoclonal antibodies, blood products, and gene therapies.
"The FDA approved a new biologic for treating severe eczema."
Often used in the plural, 'biologics', as a collective industry and regulatory category.
Relating to biology or to the processes and phenomena of living organisms.
"Sleep plays a role in nearly every biologic function of the body."
Largely interchangeable with 'biological', though less common in everyday use.
In the plural, 'biologics' commonly refers collectively to the class of living-derived medicines, as in regulatory or pharmaceutical discussions.
"Biologics now account for a growing share of global pharmaceutical spending."
Unlike ordinary pills made by chemistry in a lab, biologics are medicines grown inside living cells — which is why they can cost thousands of dollars per dose and can't simply be copied like generics.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of biologic
Biologic derives from 'biology', a term coined from the Greek roots bios (life) and logos (study), combined with the adjective-forming suffix -ic. English formed the adjective 'biologic' in the early nineteenth century as scientists established biology as a distinct discipline, and the noun use for living-derived medicines developed later, gaining prominence in the late twentieth century as biotechnology revolutionized drug manufacturing. It shares its Greek root bios with words such as antibiotic, symbiosis, and biosphere.
Related word forms
How biologic is actually used
The noun form is especially common in medical, regulatory, and pharmaceutical contexts, where it is frequently used in the plural ('biologics') as an industry category. The adjectival sense overlaps heavily with 'biological', though 'biological' is far more common in general usage.
Easily confused with biologic
Biology is the scientific study of living organisms, whereas a biologic is a specific type of medicine produced from or using living systems.