TechnologyJuly 14, 2026

biosimilar

/ˌbaɪoʊˈsɪmələr/

Definition

A biological medical product that is highly similar to an already approved reference product, having no clinically meaningful differences in safety, purity, or potency.

Etymology

Derived from the prefix 'bio-' (relating to life or biology) and the adjective 'similar.' It was coined in the late 20th century to distinguish these products from 'generics,' which are identical to chemical drugs.

In the news

The term appears in the news list sidebar regarding regulatory changes to approval requirements. It refers to a category of drugs that undergo a streamlined path to market compared to the original biologic medicines.

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