Definition

A very small unit of mass equal to one trillionth of a gram.

Example

The scientist measured the substance in picograms to ensure accuracy.

Conversation

Did you know that a picogram is one trillionth of a gram?

Wow, that's tiny! I can't even imagine how small that is.

I read that scientists often use picogram measurements in their research.

That makes sense, especially for things like particles or chemicals.

Synonyms & Antonyms

Root Explanation

Picogram → It is formed from "pico-" (from Spanish 'pico', meaning a small amount or tiny) and "gram" (from Greek 'gramma', meaning something written or a small weight). The word 'picogram' refers to a unit of mass equal to one trillionth of a gram, emphasizing its extremely small size.

Memory Tip

Think of 'pico-' meaning tiny and 'gram' meaning a small weight — a picogram is a very tiny weight.

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