cephalodium

noun ceph·a·lo·di·um \ ˌsefəˈlōdēəm \

Definition of cephalodium

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

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Origin and Etymology of cephalodium

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


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