Xenobiosis

In zoology, the term xenobiosis refers to a form of symbiosis that occurs among some ants in which two colonies of different species of ants live in the same nest, without rearing their broods in common.
Found on http://www.probertencyclopaedia.com/browse/BX.HTM

xenobiosis

xenobiosis A form of symbiosis among ants in which two colonies of different species live together on friendly terms without rearing their broods in common.
Found on http://www.wordinfo.info/words/index/info/view_unit/2332/4
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