[f. FIBRILLA + -ATE3.] intr. Of the blood: To turn into fibrillæ; to form fibrils or fibres.
183947. R. B. Todd, The Cyclopædia of Anatomy and Physiology, III. 746/2. Place a drop of the colourless liquor sanguinis, before it fibrillates, on each of the large slips.
1854. Jones & Siev., Pathol. Anat., ii. 29. Under the microscope it appears as an homogeneo-granular blastema, or basis-substance, with more or less marked tendency to fibrillate, or form actual fibres.
Hence Fibrillating ppl. a.
1854. Jones & Siev., Pathol. Anat., ii. 30. A thin layer of coagulating, fibrillating material is the medium which unites and holds together the divided surfaces, and forms the first organic connection.
1875. H. Walton, Dis. Eye, p. xxii. Its circumference is dark and fibrillating.