# Taylor Series

*Math & Statistics — Finicade finance glossary*

Approximating a curvy function by a polynomial built from its slopes at a point. In finance it's how the Greeks work — delta is the first term, gamma the second — approximating option moves.

**Also known as:** taylor-expansion, taylor-approximation, linear-approximation

**Related terms:** [The Greeks](https://finicade.com/glossary/the-greeks), [Itô's Lemma](https://finicade.com/glossary/itos-lemma), [Derivative (Calculus)](https://finicade.com/glossary/derivative-calculus)

**Taught in:** Math Masters — Taylor Series: Duration & Convexity

Source: https://finicade.com/glossary/taylor-series