'Heteroecious' definitions:

Definition of 'heteroecious'

(from WordNet)
adjective
Of parasites; passing through different stages of the life cycle on different host species; "heteroecious fungi"; "heteroecious insects" [ant: autoecious, homoecious]

Definition of 'Heteroecious'

From: GCIDE
  • Heteroecious \Het`er*[oe]"cious\, a. [Hetero- + Gr. ? house.] (Bot.) Passing through the different stages in its life history on an alternation of hosts, as the common wheat-rust fungus (Puccinia graminis), and certain other parasitic fungi; -- contrasted with aut[oe]cious. -- {Het`er*[oe]"cism}, n. [Webster 1913 Suppl.]