trillion

nouns

a very large indefinite number (usually hyperbole)
"there were millions of flies"
the number that is represented as a one followed by 18 zeros
"in England they call a quintillion a trillion"
the number that is represented as a one followed by 12 zeros
"in England they call a trillion a billion"

adjectives

one quintillion in Great Britain
is similar to
being or denoting a numerical quantity but not order
"cardinal numbers"
domain region
a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
one million million in the United States
is similar to
being or denoting a numerical quantity but not order
"cardinal numbers"
domain region
North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776