LB

LB is a versatile abbreviation used in several domains, including measurement, geography, science, and technology. It commonly denotes the pound, a unit of mass in the imperial and US customary systems. The abbreviation comes from the Latin libra, and the symbol is often lb or lbs. One pound equals 0.45359237 kilograms, and there are 16 ounces in a pound.

For geography, LB is the ISO 3166-1 alpha-2 country code for Lebanon. The associated internet top-level domain is .lb, and the international calling code is +961.

In science, LB refers to Luria-Bertani broth or LB medium, a nutrient-rich culture medium used to grow bacteria such as Escherichia coli. It was developed by Salvador Luria and Giuseppe Bertani in the 1950s. LB medium is available as broth or agar depending on preparation.

In technology and sports, LB can stand for left back in soccer, a defensive position on the left flank. In computing networks, LB commonly stands for load balancer or load balancing, a technique to distribute workloads across multiple servers.