phal·loi·din | \ fa-ˈlȯid-ᵊn 
\
\variants:
also phalloidine \ fa-ˈlȯid-ᵊn , ˈfal-ȯi-ˌdēn \
, ˈfal-ȯi-ˌdēn \Medical Definition of phalloidin
: a very toxic crystalline peptide C35H46N8O10S·H2O obtained from the death cap mushroom
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