# lead-lag

> English word · Noun

## Definitions
1. A cross-correlation of one leading variable with the values of another lagging variable at later times.
2. In helicopters, the movement of main rotor blades in the plane of rotation due to the inward and outward shifting of their centres of gravity as they flap up and down.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/lead-lag