defibrillator
UK[ˌdiːˈfɪbrɪleɪtə]US[ˌdiːˈfɪbrɪleɪtər]
n
A device that gives the heart an electric shock to stop an irregular, often dangerously fast, heartbeat and allow a normal rhythm to start again.
Morpheme Breakdown
de
fibrill
ator
de
remove
fibrill
muscle fiber
ator
agent noun suffix
Etymology
The word 'defibrillator' is a modern medical term built from classical components. Its core, 'fibrill', derives from the Latin fibra, meaning "fiber", which in a cardiac context refers to the rapid, uncoordinated contractions of individual heart muscle fibers during fibrillation. The prefix 'de-' signifies reversal or removal, implying the cessation of this chaotic state. Combined with the agent suffix '-ator', the term literally denotes "a device that removes fibrillation". Thus, the word's construction logically narrates its function: it is an instrument designed to halt the disordered quivering of heart fibers and restore coordinated rhythm.
Analysis
Structure: de (remove) + fibrill (muscle fiber) + ator (agent noun suffix)
de: Latin origin, a prefix meaning "remove from, reverse, undo".
fibrill: Latin origin (from fibra, meaning "fiber"), referring to the muscle fibers of the heart.
ator: Latin agent noun suffix (via Anglo-French -atour, -our), indicating a person or thing that performs an action.
Examples
The paramedic used a defibrillator to restart the patient's heart.
Automated external defibrillators (AEDs) are now common in public places for emergency use.
The surgeon applied the paddles of the defibrillator directly to the heart during the operation.