billiard ball Directory References Discover 7 Deadliest Weapons in History What Comes After Terabyte? Timeline of the Space Race, 1957–69 Did Duchess Anastasia Survive Her Family’s Execution? Why Is the Mona Lisa So Famous? New Seven Wonders of the World How Many Countries Are There in the World? Contents Ask the Chatbot a Question billiard ball billiards Ask the Chatbot a Question Learn about this topic in these articles:billiards In billiardsThe billiard balls, formerly made of ivory or Belgian clay, are now usually plastic; they each measure from about 21/4 to 23/8 inches (5.7 to 6 cm) in diameter, the larger balls being used in carom billiards.Read More Britannica ChatbotChatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.
