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# acute

«acute» in Mova's school dictionary: **less than 90 degrees, smaller than a right angle** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

adjective (acute, more acute, most acute)

### meaning for a pupil

1) (maths) An acute angle is less than 90 degrees, smaller than a right angle. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#m1)

2) Very serious or severe, like acute pain or an acute shortage. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#m2)

3) (medicine) Starting suddenly and lasting a short time, as opposed to chronic. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#m3)

4) Very sharp and good, about senses or the mind, like acute hearing. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#m4)

### sense in the lessons

In maths: acute angle (under 90 degrees), acute triangle (all angles under 90). In health: acute pain, acute illness. In science about animals: acute sense of smell. Phrases: acute angle, acute triangle, acute shortage, acutely aware.

### examples

- An acute angle is smaller than a right angle. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x1)
- All three angles in an acute triangle are less than 90 degrees. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x2)
- Dogs have an acute sense of smell. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x3)
- He was taken to hospital with acute stomach pain. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x4)
- There is an acute shortage of water in the village. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x5)
- Owls have acute hearing. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x6)
- This one possessed the sense of hearing to a very high degree: so acute was this sense, that it was said he could hear the grass grow. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/#x7)

### note

Maths: acute < 90 degrees, right = 90, obtuse between 90 and 180, reflex between 180 and 360. Exactly 90 is not acute. Medicine: acute (sudden, short) versus chronic (long-lasting). An "acute accent" is the mark on é.

### Trees and pragmatics

[Every meaning and example of «acute» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/acute/), each sentence with its dependency tree and frames.