verb (used with object), fi·bril·lat·ed, fi·bril·lat·ing.
- to cause to undergo fibrillation.
verb (used without object), fi·bril·lat·ed, fi·bril·lat·ing.
- to undergo fibrillation.
c.1840, from fibrilla (see fibril) + -ate (2). Related: Fibrillated; fibrillating.
v.
- To undergo or to cause to undergo fibrillation.
- To make or to become fibrillar.
adj.
- Being fibrillated.