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Erythrocyte

/ɪˈrɪθrəsaɪt/noun

A red blood cell, the disc that carries oxygen from the lungs to the tissues.

The Greek roots

ἐρυθρός
erythrós
red
+
κύτος
kýtos
hollow vessel

Literally: red hollow vessel

The story of the word

Κύτος meant a jar, a chest, the hold of a ship, anything hollow, and nineteenth-century biology drafted it as the standard ending for anything cellular. Red hollow vessel is a fair description of the object: a mature red cell is a bag of haemoglobin that has thrown its own nucleus overboard to make room for cargo. Ἐρυθρός also gives erythema, the flush of inflamed skin, and the Erythraean Sea of the old sailing manuals, which is the Red Sea.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
late 19th century

Same family

erythemaleukocytecytologycytoplasm

In a sentence

Her erythrocyte count came back low enough to explain the breathlessness.

Under the microscope the erythrocytes looked like stacked coins.

Built on the same root

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