noun
strain
A distinct variety within a biological type.
This strain of bacteria survives treatment with several common antibiotics.
Etymology
The older word means lineage or stock. Biology retains that descent-based meaning for a distinguishable variety within a broader kind.
More examples
- The baker uses a yeast strain that produces a mild flavor.
- Researchers compare two strains of corn for drought resistance.
- Several strains of the flu virus circulate each winter.
Forms
strain · strains