Floating action button
/FLOH-ting AK-shun BUT-un/ · noun · ACTION pattern · #057
One round button floating above everything, reserved for the screen's single most important action. Two FABs means zero priorities.
Also called: FAB, floating button.
Common questions
What is the round floating button in the corner of an app called?
A floating action button (FAB), a Material Design pattern — a circular button hovering above the content, reserved for the screen’s single most important action.