Definition

A chemical compound with the formula C4H6O2, consisting of two acetyl groups. It is often used in flavoring and fragrance products.

Example

Diacetyl is commonly used to give a buttery flavor to popcorn.

Conversation

Did you know that diacetyl is used in some flavored products?

Yeah, I've heard it's what gives butter a nice taste.

Exactly! But I've also read it can be harmful in large amounts.

That's true; moderation is key, even with something like diacetyl.

Synonyms & Antonyms

Root Explanation

Diacetyl is formed from "di-" (meaning two) and "acetyl" (from the Latin "acetum", meaning vinegar, and the suffix "-yl" indicating a radical or group). The word refers to a compound that contains two acetyl groups, hence the name diacetyl, meaning two parts of vinegar-related structure.

Memory Tip

Think of 'di-' meaning two and 'acetyl' relating to vinegar — diacetyl is a compound that has two vinegar-like parts.

Visually Confused Words