[ het-er-uh-thal-ik ]
/ ˌhɛt ər əˈθæl ɪk /

adjective Mycology.

having mycelia of two unlike types, both of which must participate in the sexual process.Compare homothallic(def 1).

Origin of heterothallic

First recorded in 1900–05; hetero- + thallic

Related forms

het·er·o·thal·lism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for heterothallic


/ (ˌhɛtərəʊˈθælɪk) /


(of some algae and fungi) having male and female reproductive organs on different thalli
(of some fungi) having sexual reproduction that occurs only between two self-sterile mycelia
Compare homothallic

Derived Forms

heterothallism, noun

Word Origin for heterothallic

C20: from hetero- + Greek thallos green shoot, young twig
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012