Kro·pot·kin 
(krə-pŏtkĭn, krō-), Prince Pyotr Alekseyevich 1842-1921.
(krə-pŏtkĭn, krō-), Prince Pyotr Alekseyevich 1842-1921. Russian anarchist and political philosopher who maintained that cooperation, not competition, was the means to bettering the human condition. He greatly influenced anarchist movements throughout the world.
- tetradynamous
- tetraethyl lead
- tetraethyllead
- tetraethyl pyrophosphate
- tetragon
- tetragonal
- tetragonally
- Tetragrammaton
- tetrahedral
- tetrahedrally
- tetrahedrite
- tetrahedron
- tetrahydrocannabinol
- tetrahydrofuran
- tetrahydroxy
- tetralogy
- tetralogy of Fallot
- tetramer
- tetrameric
- tetramerous
- tetramery
- tetrameter
- tetraplegia
- tetraplegic
- tetraploid