A-fib

noun

ˈā-ˈfib 

variants or less commonly AFib or Afib

: atrial fibrillation

Word History

Etymology

by shortening

First Known Use

1988, in the meaning defined above

Medical Definition

A-fib

noun

ˈā-ˈfib 

variants also AFib or Afib

: atrial fibrillation

A-fib occurs when the top chambers of the heart, responsible for bringing blood back from the rest of the body, start to flutter.

—Forbes

Individuals who walked two to three miles per hour … had a 32 percent lower risk of developing AFib, whereas those who walked more than three miles per hour (moderate pace) lowered their risk by 41 percent.

—Food & Fitness Advisor