Motion Design
Noun · Development
Definitions
The discipline of designing animations and transitions within a user interface — including easing curves, duration, choreography, and spatial relationships — to communicate state changes, guide attention, and reinforce the interaction model.
In plain English: Planning how things move and animate on screen to make an app feel smooth and help users understand what's happening.
Example: "The motion design spec says the card should slide up with a 300ms ease-out and the overlay should fade in 200ms later."