Definition

A highly flammable liquid used to measure the octane ratings of fuels, with a specific chemical structure.

Example

Isooctane is often used in laboratories to test the performance of gasoline.

Conversation

Did you know that isooctane is used to measure fuel quality?

Really? I had no idea it was that important.

Yeah, it’s a key component in determining octane ratings.

That makes sense! I guess it's crucial for high-performance engines.

Synonyms & Antonyms

Root Explanation

**Isooctane** → The word is formed from "iso-" (meaning equal or similar) and "octane" (from Latin *octo*, meaning eight). Isooctane refers to a specific isomer of octane, which has eight carbon atoms, and is used as a standard for measuring octane ratings in fuels.

Memory Tip

Think of 'iso-' meaning similar and 'octane' referring to eight carbon atoms — iso-octane is a similar form of octane with eight carbons.

Visually Confused Words