parasitism.

1. A relationship in which one organism benefits while living on or in another and harming or imposing a cost on it.

2. Dependence on others’ work or resources in a way regarded as taking advantage without adequate contribution.

Use it for

Words that belong together

• biological parasitism
• host-parasite relationship

On the page

Biological parasitism explained the organism’s dependence on the host without establishing that every interaction was identical.

The study distinguished parasitism from an association in which both organisms benefited.

Usage notes

Primary category: horror / sci-fi / gothic. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: hazard description, speculative setting, bodily condition, scene explanation. Disciplines: genre writing, science-informed description, clinical and safety vocabulary. Commonness: moderately common.