deleterious /del-i-tēˈri-əs/

1. Harmful or destructive
2. Poisonous

• optics
• optic thalamus
• optic tube
• optima
• optimal
• platen
• platens
• plate-powder
• plate-printing
• plate-proof
• plate-proofs
• plater
• plate rack
• plate racks
• plate rail
• plate rails
• plateresque
• plate-room
• plate-rooms
• platers
• plates
• plate-ship
• plate-ships
• plate tectonics
• plate-warmer