Sigmoid curve

Pronunciation
/SIG-moid KURV/
Category
Mathematics and Biological Modeling
Plural
Sigmoid curves

Definition

A type of mathematical curve characterized by a smooth, S-shaped transition between two states, often used to describe population growth or the spread of diseases.

Etymology

From Greek *sigmoeidēs*, meaning 'shaped like the letter sigma' (σ).

Example

The population growth of a species often follows a sigmoid curve.

Related Terms

  • S-shaped curve
  • Logistic function