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mycocecidium

American  
[mahy-koh-suh-sid-ee-uhm] / ˌmaɪ koʊ səˈsɪd i əm /

noun

Mycology.
  1. a gall caused by a parasitic fungus.


Etymology

Origin of mycocecidium

< New Latin, equivalent to myco- myco- + cecidium gall < Greek kēkídion ink-gall, equivalent to kēkid-, stem of kēkís oak-gall, a dye made therefrom + -ion diminutive suffix