1. Naively or unreasonably optimistic
   "I found the article regarding earnings growth slightly Panglossian" 
2. Of or relating to the view that this is the best of all possible worlds

Encyclopedia: Panglossian

• allusiveness
• alluvial
• alluvial cone
• alluvial deposit
• alluvial fan
• alluvial flat
• alluvial plain
• alluvial sediment
• alluvial soil
• alluviation
• alluvion
• alluvium
• ally
• ally with
• allyl
• allyl alcohol
• allyl group
• allyl radical
• allyl resin
• allylic
• alma mater
• Alma-Ata
• Almagest
• almanac
• almandine