1. A form of daylight-saving time, one hour ahead of UTC, used in the United Kingdom, Ireland and mainland Portugal in summer
   - British Summer Time, BST, Western European Summer Time

Encyclopedia: Irish Standard Time

• Pluteus cervinus
• Pluteus magnus
• Pluto
• plutocracy
• plutocrat
• plutocratic
• plutocratical
• pluton
• Plutonian
• plutonic
• plutonic rock
• plutonium
• plutonium 239
• plutonium bomb
• plutonium pit
• plutonium trigger
• plutonomy
• pluvial
• Pluvialis
• Pluvianus
• Pluvianus aegyptius
• pluviometer
• Pluviose
• ply
• plyboard