A genus of fresh-water Pulmonifera, having reversed spiral shells. See Pond snail, under pond.
A large genus of pond-snails or fresh-water gastropods of household Limnæidæ, or made sort of the Physidæ, getting the layer sinistral.
[lowercase] A pond-snail regarding the genus Physa.
[lowercase; pl. physæ (-sē).] In some anthozoans, as Edwardsia, the reduced end associated with body. It would likely or may possibly not be retractile into the scapus. Compare capitulum, 6, and scapus, 6.
A theory or system of social reform which contemplates a complete reconstruction of society with a more just and equitable distribution of property and labor In popular usage the term is often employed to indicate any lawless revolutionary social scheme See Communism Fourierism Saint Simonianism forms of socialism...