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

See also: helpful, implement

• planking
• plankton
• planktonic
• planktonic algae
• planless
• planned
• planned community
• planner
• planning
• planning board
• planning commission
• Plano
• Planococcus
• Planococcus citri
• planoconcave
• planoconvex
• planographic
• planographic printing
• planography
• plant
• plant bug
• plant cell
• plant closing
• plant department
• plant disease