bothridium
noun
bo·thrid·i·um
| \ bō-ˈthrid-ē-əm
\
\
plural bothridia\ -ē-ə
\
or bothridiums
\
or bothridiums
Medical Definition of bothridium
: one of the outgrowths from the head of tapeworms especially of the order Tetraphyllidea that act as holdfasts