Meaning of “acute” in the English Dictionary

"acute" in British English

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uk /əˈkjuːt/ us /əˈkjuːt/
noun [ U ] uk /əˈkjuːt.nəs/ us /əˈkjuːt.nəs/

acutenoun [ C ]

uk /əˈkjuːt/ us /əˈkjuːt/ also acute accent

(Definition of “acute” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"acute" in American English

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us /əˈkjut/

acute adjective (EXTREME)

very serious, extreme, or severe:

The area has an acute water shortage.

In medicine, acute describes severe conditions, illnesses, or injuries that need immediate care:

Not all hospitals can provide acute care.

acute adjective (ACCURATE)

aware of or able to recognize small differences between things, or being accurate in judging something:

He has very acute hearing.
Note: Used to describe thinking, feeling, hearing, seeing, smelling, or tasting.

acute adjective (ANGLE)

geometry (of an angle) less than 90º

acute triangle

An acute triangle is a triangle with three angles of less than 90º.

adverb us /əˈkjut·li/

I was acutely aware of their problems.

(Definition of “acute” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"acute" in Business English

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uk /əˈkjuːt/ us

if a bad situation is acute, it causes severe problems or damage:

The problem is particularly acute for small businesses.
an acute conflict/crisis/need

(Definition of “acute” from the Cambridge Business English Dictionary © Cambridge University Press)