Planaria \Pla*na"ri*a\, n.; pl. L. Planari[ae], E. -rias.
[NL. See Planary.] (Zool.)
Any species of turbellarian worms belonging to Planaria,
and many allied genera. The body is usually flat, thin, and
smooth. Some species, in warm countries, are terrestrial.
[1913 Webster]
