[het-uh-ree-siz-uh
m] 
| the development of different stages of a parasitic species on different host plants. |
[het-uh-ree-shuhs] , adjective | het·er·oe·cious (hět'ə-rē'shəs) adj. Spending different stages of a life cycle on different, usually unrelated hosts. Used of parasites such as rust fungi and tapeworms. [hetero- + Greek oikiā, house; see weik-1 in Indo-European roots + -ous.] het'er·oe'cism (-sĭz'əm) n. |