Definition of "symbiont" [symbiont]

• An organism in a symbiotic relationship. Also called symbiote. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "She then finds herself what is termed a symbiont, which is one who provides a regular blood source to the vampires known as Ina."
• "But they didn't tell her that merging with the symbiont was the easy part."
• "Symbiogenesis – the appearance of new behaviors, tissues, organs, organ systems, physiologies or species as a result of symbiont interaction – is the major source of evolutionary novelty in eukaryotes: animals, plants and fungi."