cephalodium

noun

ceph·​a·​lo·​di·​um

ˌsefəˈlōdēəm

plural cephalodia

-ēə

: an irregular internal or external gall-like growth in lichens that differs from an isidium in having an algal component other than that natural to the lichen

Word History

Etymology

New Latin, from Greek kephalōdēs like a head (from kephal- cephal- + -ōdēs -ode) + New Latin -ium

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