Definition

A method of estimating or predicting a value based on existing data or trends, often used to make guesses about future events or conditions.

Example

The scientist used extrapolation to predict the temperature changes over the next decade.

Conversation

I was reading about extrapolation in my statistics class yesterday.

Oh really? What did they say about it?

They explained how it helps predict values outside known data points.

That sounds interesting! I never thought about it that way.

Synonyms & Antonyms

Root Explanation

Extrapolation → It is formed from "extra-" (meaning outside) and "polare" (from Latin, meaning to make or to shape). The word describes the act of estimating or inferring values outside a known range based on existing data.

Memory Tip

Think of going 'outside' ('extra-') the known data to 'shape' ('polare') new estimates — that's what extrapolation means.

Visually Confused Words