noun

catheter

catheter

The nurse inserted the catheter.

The nurse inserted the catheter.

A cardiac catheter is used for diagnosis.

A cardiac catheter is used for diagnosis.

a/the catheter a thin tube used in medicine The doctor used a catheter to drain the fluid.

Synonyms: tube, probe, cannula

From Greek 'katheter' (thing let down), from 'kata-' (down) + 'hienai' (to send).

Picture a thin tube being 'sent down' into a body cavity, which is its literal meaning.

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