billion

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun 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
  2. noun a very large indefinite number (usually hyperbole)
  3. noun the number that is represented as a one followed by 9 zeros

Etymology

From French billion, equivalent to bi- (“two”) + -illion.

In classic literature

Synonyms

one million million, 1000000000000

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