Fibrin
/ˈfaɪ.brɪn/noun
An insoluble protein that forms the fibrous network of blood clots.
Did you know?Fibrin was named in the 19th century from Latin *fibra* “fiber,” because clotting blood forms a threadlike mesh—proof that even science borrowed its vocabulary from the language of threads and woven matter.
Etymological Timeline
Latin
Latin
fibra
“fiber, thread, filament”
18th Century
French
fibrine
“the clotting substance in blood”
19th Century
English
fibrin
“the threadlike substance formed during blood coagulation”
Modern English
English
fibrin
“an insoluble protein that forms the fibrous network of blood clots”