disperser

1. (chemistry) A substance that stabilizes a dispersion; an emulsifier.

2. (graph theory) A particular kind of bipartite graph.

3. (ecology) An organism that disperses something, such as seeds, in the environment.Examples: "Nesting data from dispersers and nondispersers came from the same set of colonies and were thus directly comparable."; "Ants are integral components of terrestrial ecosystems, owing to their manifold interactions with other organisms. They serve as seed dispersers for plants (myrmecochory), mutualists with sap-sucking insects (trophobionts), and hosts for a wide range of associate organisms (myrmecophiles) and act as both predator and prey."