1. Biological Definition:
This is the most common meaning. A parasite is an organism that lives in or on another organism (the host) and benefits by deriving nutrients at the host's expense. Examples include tapeworms, fleas, and some types of bacteria.
2. Figurative Meaning:
This meaning is more metaphorical and refers to a person or thing that relies on others for support or benefit, without giving anything in return. This can be applied to:
* People: Someone who takes advantage of others, often without contributing to the relationship.
* Organizations: A company or group that benefits from another's work or resources without providing fair compensation.
* Activities: Something that drains resources or energy without providing any benefit.
3. Other:
The word parasite can also be used in more specific contexts like:
* Plant Parasite: A plant that derives nutrients from another plant.
* Social Parasite: A person who exploits others for personal gain.
In summary: A parasite is something that lives off of another, benefiting at the expense of its host. This can apply to living organisms, people, organizations, or even activities.