1. [Cdn] Canadian group of landscape painters from the 1920s, influenced by Impressionism 
2. Group of advanced industrialized nations: United Kingdom, France, Germany, Italy, Japan, USA, Canada, and (as from 1998) Russia
   - G7, G8, Group of Eight

Encyclopedia: Group of Seven

• opt
• opt out
• optative
• optative mood
• Optez
• opthalmic
• optic
• optic axis
• optic chiasm
• optic chiasma
• optic cup
• optic disc
• optic disk
• optic nerve
• optic radiation
• optic tract
• optical
• optical aberration
• optical activity
• optical art
• optical bench
• optical character recognition
• optical condenser
• optical crown
• optical crown glass