Symbiotic (adjective)

1. Describing a close relationship between two species of organisms where at least one species benefits from the association.
2. Relating to or involving symbiosis.

Origin:

Derived from greek word "symbiōtikos" meaning "living together".

Examples:

1. The symbiotic relationship between ants and aphids is beneficial for both species.
2. The coral and algae have a symbiotic relationship, where the coral provides shelter to the algae and the algae provides food to the coral.
3. The relationship between plants and pollinators is an example of a symbiotic relationship.
4. The symbiotic association between fungi and plant roots is called mycorrhiza.
5. The symbiotic relationship between bacteria and humans is essential for many of our bodily functions.