Definition

A heart contraction that happens earlier than normal, causing a brief irregular heartbeat.

Example

The doctor explained that an extrasystole can occur occasionally and is usually not a cause for concern.

Conversation

I heard you went to the doctor recently; how did that go?

It was fine, but they mentioned I might have an extrasystole.

Oh no, that sounds serious! What does it mean exactly?

It's just a premature beat of the heart; they said it's usually harmless.

Synonyms & Antonyms

Root Explanation

Extrasystole → It is formed from "extra-" (meaning outside or beyond) and "systole" (from Greek "systolē", meaning contraction). The term describes a heartbeat that occurs outside the normal rhythm, hence a contraction that happens beyond the usual timing.

Memory Tip

Think of a heartbeat that happens 'beyond' ('extra-') the normal rhythm of heart 'contraction' ('systole'). This helps you remember that extrasystole refers to an extra heartbeat.

Visually Confused Words