the.com/clot

The body's panic button for leaks, until it forgets to turn itself off.

means A clump of blood (or other fluid) that has thickened from liquid into a semi-solid mass, usually to seal a wound.

from Clot comes from Old English 'clott,' meaning a lump or mass of something — it originally described any rounded clump, like a clod of earth, before narrowing in medical use to specifically mean coagulated blood. It's a cousin of 'clod' and possibly related to 'cleat' and 'clat,' all pointing to the same old Germanic idea of a thick, compacted lump.

made of
platelets and fibrin, nature's biological duct tape
good version
seals a cut before you bleed out
bad version
blocks arteries, causes strokes and heart attacks
formation time
starts sealing wounds within seconds
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