1. Capable of being easily compressed
   - compressible

See also: soft, squeezability

• order Proteales
• order Protura
• order Pseudomonadales
• order Pseudoscorpiones
• order Pseudoscorpionida
• order Psilophytales
• order Psilotales
• order Psittaciformes
• order Psocoptera
• order Pterosauria
• order Pulmonata
• order Pycnogonida
• order Radiolaria
• order Rajiformes
• order Ranales
• order Ranunculales
• order Raptores
• order Rhamnales
• order Rheiformes
• order Rhoeadales
• order Rhynchocephalia
• order Rickettsiales
• order Rodentia
• order Rosales
• order Rubiales