re ‧ quire S1 W1 AC /rɪˈkwaɪə $ -ˈkwaɪr/ BrE AmE verb [transitive not in progressive]
[ Word Family: verb : ↑ require ; noun : ↑ requirement ]
[ Date: 1300-1400 ; Language: Old French ; Origin: requerre , from Vulgar Latin requaerere 'to try to find, need' , from Latin requirere , from quaerere 'to ask' ]
1 . to need something:
Campbell’s broken leg will probably require surgery.
What’s required is a complete reorganization of the system.
Most house plants require regular watering.
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Require is used especially in written English. In everyday English, people usually say need :
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His leg will probably need surgery.
2 . if you are required to do or have something, a law or rule says you must do it or have it
be required to do something
You are required by law to wear a seat belt.
require that
Regulations require that students attend at least 90% of the lectures.
The bill failed to get the required number of votes.