Question: is bb an abbreviation for billion?
Answer: 1,000,000,000 (one billion, short scale; one thousand million or milliard, yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001. One billion can also be written as b or bn. ... The metric prefix giga indicates 1,000,000,000 times the base unit. Its symbol is G.