1. Serving or acting as a means or aid
   - instrumental, subservient

See also: helpful, implement

• genus Planococcus
• genus Plantago
• genus Plasmodiophora
• genus Plasmodium
• genus Platalea
• genus Platanthera
• genus Platanus
• genus Platichthys
• genus Platycerium
• genus Platylobium
• genus Platymiscium
• genus Platypoecilus
• genus Platystemon
• genus Plautus
• genus Plecotus
• genus Plectania
• genus Plectorrhiza
• genus Plectranthus
• genus Plectrophenax
• genus Pleione
• genus Pleiospilos
• genus Plesianthropus
• genus Plesiosaurus
• genus Plethodon
• genus Pleurobrachia