Definition

Having a shape that resembles the letter S, often used to describe certain curves or structures in anatomy and mathematics.

Example

The graph of the function has a sigmoid shape, rising gradually before leveling off.

Conversation

Have you seen the new design for the bridge?

Yeah, it's really interesting how it has that sigmoid shape.

I know! It makes the whole structure look so elegant.

Absolutely, it stands out compared to the usual designs.

Synonyms & Antonyms

Root Explanation

Sigmoid → It is formed from "sigmoides" (from Greek "sigma" meaning S and "eidos" meaning form or shape). The word describes a shape resembling the letter S, hence the term sigmoid refers to something that has an S-like curve.

Memory Tip

Picture the letter 'S' when you think of 'sigmoid' — it helps you remember that sigmoid refers to a shape that curves like an 'S'.

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