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.]