From Longman Dictionary of Contemporary Englishextentex‧tent /ɪkˈstent/ ●●●S2W1 noun1 →to ... extent2[uncountable]SIZE how large, important, or serious something is, especially something such as a problem or injuryextent ofConsidering the extent of his injuries, he’s lucky to be alive.It’s too early to assess the full extent of the damage.3[uncountable]SIZE the length or size of somethingThey opened out the nets to their full extent.in extentThe region is over 10,000 square kilometres in extent.► see thesaurus at sizeCOLLOCATIONS – Meaning 1: phrasesto some extent/to a certain extent (=partly)What you say is true to some extent, but it’s not the whole picture.to a large/great extent (=a large amount)The materials we use will depend to a large extent on what is available.to a small extent (=a small amount)The plan succeeded to a small extent.to a greater extent (=more)Children suffer the effects of poor diet to a greater extent than adults.to a lesser extent (also to less extent) (=less)The same is true for women, though to a lesser extent.to a considerable/significant extent (=a considerable or significant amount)The affair affected his popularity to a considerable extent. to a limited extent (=not a very large amount)In the USA, and to a limited extent in Britain, the housing market is in recession.to such an extent that/to the extent that (=so much that)He annoyed her to such an extent that she had to leave the room.to the same extent (=to the same amount)The roads were congested but not to the same extent as in London.to what extent? (=how much?)To what extent does cutting down trees contribute to climate change?the extent to which (=how much)The report focused on the use of speed cameras, particularly the extent to which they reduced accidents.
COLLOCATIONS – Meaning 2: how large, important, or serious something is, especially something such as a problem or injuryadjectivesthe full extentHe refused to reveal the full extent of his debts.the actual/true extentRescue workers still do not know the true extent of the disaster.verbsknow/realize the extent of somethingWe do not yet know the extent of the damage.understand the extent of somethingOther people didn’t seem to understand the extent of his disability.discover/find out the extent of somethingWe were shocked when we discovered the extent of the fraud.assess/establish/determine the extent of somethingWe are still trying to assess the extent of the problem.show/reveal the extent of somethingThese pictures show the extent of the devastation caused by the earthquake.A report published by the government has revealed the extent of air pollution in the area.