— equisetic , adj.
/ek'weuh see"teuhm/ , n. , pl. equisetums, equiseta /-teuh/ .
any plant of the genus Equisetum, comprising the horsetails.
[ 1820-30; equisaetum, equiv. to equi-, comb. form of equus horse + saet ( a ) bristle + -um neut. n. suffix ]