religious system revealed by Muhammad, 1818, from Arabic islam, literally submission (to the will of God), from root of aslama he resigned, he surrendered, he submitted, causative conjunction of salima he was safe, and related to salam peace..
Games are played in four quarters of 10 (FIBA) or 12 minutes (NBA). College men's games use two 20-minute halves, college women's games use 10-minute quarters, and United States high school varsity games use 8 minute quarters.
Regulation Length and Shot Clock. In the National Basketball Association (NBA), regulation lasts for four 12-minute quarters. In high school basketball, each quarter lasts for eight minutes, and in college basketball, teams play for two 20-minute halves.