acontia

1 definition found

acontia - Collaborative International Dictionary of English v.0.48 :

  Acontia \A*con"ti*a\, n. pl. [NL., from Gr. ? a little dart.]
     (Zool.)
     Threadlike defensive organs, composed largely of nettling
     cells (cnid[ae]), thrown out of the mouth or special pores of
     certain Actini[ae] when irritated.
     [1913 Webster]