One of the mysteries of the English language finally explained.

# Definition of *Newton–Cotes* in US English:

## Newton–Cotes

### noun

MathematicsAttributive Designating or relating to (any of) a class of formulae based on Newton's method which are used to find approximate integrals for functions over a finite range (e.g. Simpson's rule, the three-eighths rule); especially in "Newton–Cotes formula".

**Origin**

1920s; earliest use found in American Mathematical Monthly. From the names of Sir Isaac Newton and Roger Cotes, English mathematician: see quot. 1981.