Webster’s Revised Unabridged Dictionary · 1913
Heterœcious
Het′er·œ′cious, a. [Hetero- + Gr. οἶκος 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 autœcious. — Het′er·œ′cism (#), n.