# Definition of *coefficient* in English:

## coefficient

Syllabification: co·ef·fi·cientPronunciation: /ˌkōəˈfiSHənt
/

### noun

- 1
*Mathematics*A numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g.,*4*in*4x*^{y}).More example sentences- He extended the applications of the operational method to linear ordinary differential equations with variable coefficients.
- The problem was to find the roots by adding, subtracting, multiplying, dividing and taking roots of expressions in the coefficients.
- Hermite had posed the problem of finding the minimal values of quadratic forms in n variables whose coefficients were real.

- 2
*Physics*A multiplier or factor that measures some property:*coefficients of elasticity**the drag coefficient*More example sentences- The drag coefficient combines several ballistic properties of typical projectiles.
- This measure of a material's elasticity is called its coefficient of restitution.
- The shading coefficient is the measure of solar heat gain through the window.

### Origin

mid 17th century (in the sense 'cooperating to produce a result'): from modern Latin *coefficient-*, from *com-* 'together' + *efficient-* 'accomplishing' (see efficient).