1 Mathematics A surd number, especially the irrational root of an integer.
- They were learning about surds in maths, supposedly one of the hardest subjects.
- I don't care about rationalising denominators with surds in them, and I don't care that by using maths induction you can prove many equations to be right or wrong.
- In the conventional school education in India, we are asked to do some problems involving surds (radicals).
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