Definition Of approximation
a value or quantity that is nearly but not exactly correct.
these figures are only approximations
Example Of approximation
First, the asymptotic results provide a very reasonable approximation for the velocity even for a much lower level of cooperativity.
For participants in the glue group, similar approximation was achieved with single circumferential application of tissue glue.
Here's a nice little political survey which gives you an approximation of where you are on the political spectrum.
In the Appendix, we use small v approximations to derive simple analytic approximations for the quantitative results from the models.
Matheson's method does give a very close approximation to the situation in 1890.