n. A usually negative effect on the growth or development of an organism of one species, caused by a chemical released by an organism of another species. Usually used of plants. [Greek allēlōn, reciprocally (from allos, another; see al-1 in the Appendix of Indo-European roots) + -PATHY.] al·le′lo·pathic (ə-lē′lə-păthĭk, ə-lĕl′ə-) adj. |
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