approximation
ap·prox·i·ma·tion
/əˌprɑːksəˈmeıʃən/ noun , pl -tions [ count ]
1 : an amount, figure, etc., that is almost correct and is not intended to be exact : an approximate amount, figure, etc.
These numbers are only approximations [=estimates] but they give us some idea of what we can afford.
This isn't an exact figure but I think it's a good/rough approximation of what the land is worth.
2 : something that is similar to something else
The color of the paint isn't the exact same color as the vase, but it's a close approximation.
— usually + of or to
The astronauts train in a room that provides an approximation of conditions in space.
There's little more than a vague approximation to the truth in their story.
