billion

A billion is 1,000,000,000. There are over 7 billion people in the world, the last time we checked.

While billion may sounds like a made-up number like zillion — which just means a lot — it's a very real number, specifically 1,000,000,000. That's a pretty hard number to imagine, but one way to think of it is as a thousand millions. If you have a billion dollars, you're very rich: a billionaire. Money spent by the government is often measured in billions. In England, this word often refers to a different number: 1,000,000,000,000, or one million millions.

Definitions of billion
1

adj denoting a quantity consisting of one thousand million items or units in the United States

Synonyms:
cardinal
being or denoting a numerical quantity but not order

adj denoting a quantity consisting of one million million items or units in Great Britain

Synonyms:
cardinal
being or denoting a numerical quantity but not order

n the number that is represented as a one followed by 9 zeros

Synonyms:
1000000000, one thousand million
Types:
milliard
a billion
Type of:
large integer
an integer equal to or greater than ten

n the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen

Synonyms:
1000000000000, one million million
Type of:
large integer
an integer equal to or greater than ten

n a very large indefinite number (usually hyperbole)

Synonyms:
gazillion, jillion, million, trillion, zillion
Type of:
large indefinite amount, large indefinite quantity
an indefinite quantity that is above the average in size or magnitude

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