Entropy

Measure of disorder; second law of thermodynamics states entropy always increases

— defined in 146th Edition, Feb 8, 2026

4editions defined

Aug 2025first defined

Feb 2026most recent

Technical Termscategory

Glossed in 4 editions — when this term was part of the working vocabulary. First defined in 122th Edition.

122th A measure of the disorder or randomness in a system, key in information theory
129th Measure of disorder or randomness in a system
143th Measure of information uncertainty or disorder

146th EditionW06 · Feb 8, 2026

143th EditionW03 · Jan 18, 2026

129th EditionW41 · Oct 12, 2025

122th EditionW34 · Aug 24, 2025