Acrita

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Acrita \Ac"ri*ta\, n. pl. [NL., from Gr. ? indiscernible; 'a
     priv. + ? to distinguish.] (Zool.)
     The lowest groups of animals, in which no nervous system has
     been observed.
     [1913 Webster]