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Electrocardiogram

/ɪˌlɛktroʊˈkɑːrdiəɡræm/noun

A tracing of the heart's electrical activity recorded through electrodes on the skin.

The Greek roots

ἤλεκτρον
ḗlektron
amber
+
καρδία
kardía
heart
+
γράμμα
grámma
thing written

Literally: amber-heart writing

The story of the word

Three ancient words for a machine barely a century old. Willem Einthoven's string galvanometer of 1901 made the recording precise enough for clinical use, and he wrote it up in German as Elektrokardiogramm, which is why English still abbreviates it EKG as often as ECG. ἤλεκτρον is amber, the fossil resin that picks up dust when rubbed on cloth, and the whole of electricity is named after that parlour trick.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
early 20th century

Same family

electroncardiaccardiologytelegramdiagram

In a sentence

The paramedic ran an electrocardiogram in the ambulance and radioed the trace ahead.

Built on the same root

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