endospore

This term is a specialized biological descriptor used primarily in microbiology. It describes a survival mechanism rather than a reproductive one; unlike spores in fungi or plants, an endospore does not result in an increase in the number of individuals, but rather allows a single bacterium to persist through lethal conditions.

In a laboratory or clinical setting, the term carries a strong connotation of resistance. When a pathogen is described as "endospore-forming," it signals to practitioners that standard sterilization methods may be insufficient and that more aggressive heat or chemical treatments are required to ensure total eradication.