quadrillion
lowformal in numerical contexts, informal in hyperbolic use
Definition
Meaning
A cardinal number equal to 10^15 (1,000,000,000,000,000) in the short scale used in modern English.
Used hyperbolically to refer to an extremely large but indefinite number.
Linguistics
Semantic Notes
In modern usage, 'quadrillion' universally means 10^15 in the short scale. Historically, in long scale (now archaic in English), it meant 10^24.
Dialectal Variation
British vs American Usage
Differences
Both modern British and American English use the short scale (10^15). Historically, British English used the long scale (10^24), but this is now rare.
Connotations
Similar connotations of extreme magnitude in both varieties, with British English occasionally referencing historical scale in academic contexts.
Frequency
Equally infrequent in both varieties, primarily appearing in scientific, financial, or hyperbolic expressions.
Vocabulary
Collocations
Grammar
Valency Patterns
[number] quadrillion [of] [noun][verb] a quadrillion [noun]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Used in high finance or economics to describe extremely large sums, e.g., 'The global market cap is measured in quadrillions.'
Academic
Employed in mathematics, physics, or data science for precise large quantities, e.g., 'The experiment generated quadrillion data points.'
Everyday
Common in hyperbolic speech to emphasize frequency or quantity, e.g., 'I've called you a quadrillion times.'
Technical
Applied in fields like computing (e.g., quadrillion bytes) or astronomy for exact measurements.
Examples
By Part of Speech
adjective
British English
- The quadrillion estimate was astonishing.
American English
- They're dealing with quadrillion-level computations.
Examples
By CEFR Level
- Quadrillion is a very big number.
- The distance is about a quadrillion meters.
- Economists predict that the deficit could reach a quadrillion within a decade.
- In cosmological terms, the number of particles in the observable universe is on the order of a quadrillion.
Learning
Memory Aids
Mnemonic
Think of 'quad' as in four, and in the short scale, quadrillion is 1,000 times a trillion, with 15 zeros: 1,000,000,000,000,000.
Conceptual Metaphor
LARGE NUMBER IS PHYSICAL SIZE or ABUNDANCE IS EXCESS.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- In Russian, 'квадриллион' can mean either 10^15 or 10^24 depending on context, mirroring English historical scales, so clarity on scale is essential.
Common Mistakes
- Mispronouncing with equal stress as 'quad-rillion'
- Confusing with 'trillion' or 'quintillion'
- Using in non-hyperbolic contexts without specifying the scale.
Practice
Quiz
What does 'quadrillion' typically refer to in modern English?
FAQ
Frequently Asked Questions
In modern usage, both British and American English use the short scale where quadrillion is 10^15. Historically, British English used the long scale where it is 10^24, but this is now rare.
Yes, it is often used hyperbolically in informal speech to mean a very large number, such as in 'I've told you a quadrillion times.'
In British English, it's pronounced /kwɒˈdrɪl.jən/; in American English, /kwɑːˈdrɪl.jən/.
Strong collocations include 'quadrillion dollars' and 'quadrillion years', often found in financial or scientific contexts.