Definition

The 21st letter in the Greek alphabet, often used in mathematics and science to represent various concepts.

Example

In geometry, phi is often used to represent the golden ratio.

Conversation

Did you know that phi is the 21st letter of the Greek alphabet?

Yeah, I've heard of it, but I don't know much about Greek letters.

It's interesting how phi is used in math and art too.

Really? I should look into that; it sounds fascinating!

Synonyms & Antonyms

Root Explanation

**Phi** → The word 'phi' comes from the Greek letter 'Φ' (phi), which is the 21st letter of the Greek alphabet. In mathematics and science, it often represents the golden ratio or a specific function. The letter itself does not have a meaning beyond its use as a symbol in various contexts.

Memory Tip

Think of the Greek letter 'phi' as a symbol that represents important concepts in mathematics and science, like the golden ratio.

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